The 'sign up' link shows when External user management is being used.

The 'sign up' link on the conflu title bar used to be hidden if external user management was being used.

If a user tries to sign up you get -

bucket.core.InfrastructureException: com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com
at bucket.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:48)
at com.atlassian.confluence.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at com.atlassian.confluence.util.profiling.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:16)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy8.addUser(Unknown Source)
at com.atlassian.confluence.user.actions.SignupAction.execute(SignupAction.java:49)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.intercept(DefaultWorkflowInterceptor.java:55)
at com.atlassian.confluence.core.ConfluenceWorkflowInterceptor.intercept(ConfluenceWorkflowInterceptor.java:33)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.atlassian.confluence.core.ConfluenceValidationInterceptor.intercept(ConfluenceValidationInterceptor.java:16)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.security.actions.PermissionCheckInterceptor.intercept(PermissionCheckInterceptor.java:40)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.pages.actions.PageAwareInterceptor.intercept(PageAwareInterceptor.java:73)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.core.ConfluenceAutowireInterceptor.intercept(ConfluenceAutowireInterceptor.java:25)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.user.actions.AuthenticatedUserInterceptor.intercept(AuthenticatedUserInterceptor.java:51)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.util.XWorkTransactionInterceptor.intercept(XWorkTransactionInterceptor.java:133)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:115)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceAction(ServletDispatcher.java:229)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:199)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
at com.atlassian.confluence.util.profiling.ProfilingPageFilter.parsePage(ProfilingPageFilter.java:159)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:168)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:181)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:96)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:170)
at bucket.custom.FlushingSpringSessionInViewFilter.doFilterInternal(FlushingSpringSessionInViewFilter.java:30)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:73)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
at com.atlassian.confluence.util.error.ProfilingAndErrorFilter.doFilter(ProfilingAndErrorFilter.java:26)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:36)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.caucho.server.http.Invocation.service(Invocation.java:315)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
at com.caucho.server.http.RunnerRequest.handleRequest(RunnerRequest.java:346)
at com.caucho.server.http.RunnerRequest.handleConnection(RunnerRequest.java:274)
at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
at java.lang.Thread.run(Thread.java:534)
Caused by: com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com
at com.opensymphony.user.UserManager.createEntity(UserManager.java:376)
at com.opensymphony.user.UserManager.createUser(UserManager.java:242)
at bucket.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:21)
... 76 more

Referer URL: http://wiki.muleumo.org/signup.action

Build Information:
Uptime: 1 day, 13 hours, 11 minutes, 50 seconds
Version: 1.3
Build Number: 112

Server Information:
Application Server: Resin/2.1.12
Servlet Version: 2.3
Database Dialect: N/A

Memory Information:
Total Memory: 99 MB
Free Memory: 29 MB
Used Memory: 70 MB

System Information:
System Date: Sunday, 12 Dec 2004
System Time: 19:52:58
System Favourite Colour: Lime
Java Version: 1.4.2_03
Java Vendor: Sun Microsystems Inc.
JVM Version: 1.0
JVM Vendor: Sun Microsystems Inc.
JVM Implementation Version: 1.4.2_03-b02
Java Runtime: Java(TM) 2 Runtime Environment, Standard Edition
Java VM: Java HotSpot(TM) Client VM
User Name: root
User Timezone: America/New_York
Operating System: Linux 2.4.26-1um
OS Architecture: i386

Request
Information:
URL: http://wiki.muleumo.org/500page.jsp

• Scheme: http
• Server: wiki.muleumo.org
• Port: 80
• URI: /500page.jsp
• - Context Path:
• - Servlet Path: /500page.jsp
• - Path Info: null
• - Query String: null

Attributes:

• _sitemesh_filterapplied : true
• javax.servlet.error.request_uri : /dosignup.action
• sessioninview.FILTERED : true
• loginfilter.already.filtered : true
• javax.servlet.error.message : com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com
• javax.servlet.error.status_code : 500
• webwork.valueStack : com.opensymphony.xwork.util.OgnlValueStack@b3149d
• javax.servlet.error.servlet_name : action
• os_securityfilter_already_filtered : true
• com.atlassian.johnson.filters.JohnsonFilter_already_filtered : true
• atlassian.core.seraph.original.url : /dosignup.action
• javax.servlet.error.exception : bucket.core.InfrastructureException: com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com
• javax.servlet.jsp.jspException : bucket.core.InfrastructureException: com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com

Parameters:

• password = test
• checkboxUsername = on
• username = test@test.com
• confirm = test
• email = test@test.com
• fullname = test

Logging:
3 log statements generated by this request:

[WARN] Sun Dec 12 19:52:58 EST 2004 [com.opensymphony.user.provider.jdbc.JDBCCredentialsProvider] User [test@test.com] must already exist

Throwable:
java.sql.SQLException: Invalid argument value, message from server: "Duplicate entry '0' for key 1"
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1905)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1109)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1203)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2090)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1680)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1527)
at com.opensymphony.user.provider.jdbc.JDBCCredentialsProvider.create(JDBCCredentialsProvider.java:98)
at bucket.user.providers.ChainedUserProvider.create(ChainedUserProvider.java:115)
at bucket.user.providers.CachingCredentialsProvider.create(CachingCredentialsProvider.java:62)
at com.opensymphony.user.UserManager.createEntity(UserManager.java:370)
at com.opensymphony.user.UserManager.createUser(UserManager.java:242)
at bucket.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:21)
at com.atlassian.confluence.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)

[ERROR] Sun Dec 12 19:52:58 EST 2004 [com.atlassian.confluence.util.XWorkTransactionInterceptor] Invoking rollback for transaction on action '/dosignup.action (SignupAction.execute())' due to throwable: bucket.core.InfrastructureException: com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com

Throwable:
bucket.core.InfrastructureException: com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com
at bucket.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:48)
at com.atlassian.confluence.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at com.atlassian.confluence.util.profiling.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:16)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy8.addUser(Unknown Source)
at com.atlassian.confluence.user.actions.SignupAction.execute(SignupAction.java:49)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

[ERROR] Sun Dec 12 19:52:58 EST 2004 [com.opensymphony.webwork.dispatcher.ServletDispatcher] Could not execute action

Throwable:
bucket.core.InfrastructureException: com.opensymphony.user.ImmutableException: No provider successfully created entity test@test.com
at bucket.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:48)
at com.atlassian.confluence.user.DefaultUserAccessor.addUser(DefaultUserAccessor.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at com.atlassian.confluence.util.profiling.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:16)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy8.addUser(Unknown Source)
at com.atlassian.confluence.user.actions.SignupAction.execute(SignupAction.java:49)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)