Cannot modify user profile when using Crowd authentication, fails with NullPointer on RemotePrincipal.getEmail()

com.atlassian.core.exception.InfrastructureException: Could not invoke service.. Nested exception is org.codehaus.xfire.fault.XFireFault: Fault: java.lang.NullPointerException;
 nested exception is:
org.codehaus.xfire.XFireRuntimeException: Could not invoke service.. Nested exception is org.codehaus.xfire.fault.XFireFault: Fault: java.lang.NullPointerException
at bucket.user.DefaultUserAccessor.saveUser(DefaultUserAccessor.java:228)
at com.atlassian.bamboo.user.BambooUserManagerImpl.saveUser(BambooUserManagerImpl.java:126)
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:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
at $Proxy6.saveUser(Unknown Source)
at com.atlassian.bamboo.ww2.actions.admin.user.ConfigureProfile.execute(ConfigureProfile.java:109)
at com.atlassian.bamboo.ww2.actions.admin.user.ConfigureProfile.doUpdate(ConfigureProfile.java:47)

08:34:20,365 ERROR org.codehaus.xfire.handler.DefaultFaultHandler: Fault occurred!
java.lang.NullPointerException
        at com.atlassian.crowd.integration.model.RemotePrincipal.getEmail(RemotePrincipal.java:81)
        at com.atlassian.crowd.integration.directory.connector.SpringLDAPConnector.updatePrincipal(SpringLDAPConnector.java:688)
        at com.atlassian.crowd.manager.directory.DirectoryManagerGeneric.updatePrincipalAttribute(DirectoryManagerGeneric.java:1738)
        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:585)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
        at org.springframework.orm.hibernate3.HibernateInterceptor.invoke(HibernateInterceptor.java:88)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
        at $Proxy9.updatePrincipalAttribute(Unknown Source)
        at com.atlassian.crowd.service.soap.SecurityServerGeneric.updatePrincipalAttribute(SecurityServerGeneric.java:310)