Closing this issue as it pre-dates an actual release of Crowd.

What type of principal was this? LDAP (specific server), Internal directory or something else?

I am also wondering if you could tell me a bit about the specs on your box?

@4000000045d98c4a36d6e6fc 05:38:40,918 WARN crowd.console.action.principal.ViewPrincipal:
@4000000045d98c4a36d6f69c java.lang.NullPointerException
@4000000045d98c4a36d6fa84 at com.atlassian.crowd.console.action.principal.ViewPrincipal.getGroups(ViewPrincipal.java:233)
@4000000045d98c4a36d70254 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
@4000000045d98c4a36d70a24 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
@4000000045d98c4a36d711f4 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@4000000045d98c4a36d796c4 at java.lang.reflect.Method.invoke(Method.java:585)
@4000000045d98c4a36d79aac at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:491)
@4000000045d98c4a36d7a27c at ognl.OgnlRuntime.getMethodValue(OgnlRuntime.java:904)
@4000000045d98c4a36d7aa4c at ognl.ObjectPropertyAccessor.getPossibleProperty(ObjectPropertyAccessor.java:54)
@4000000045d98c4a36d7ae34 at ognl.ObjectPropertyAccessor.getProperty(ObjectPropertyAccessor.java:122)
@4000000045d98c4a36d7c5a4 at com.opensymphony.xwork.util.OgnlValueStack$ObjectAccessor.getProperty(OgnlValueStack.java:54)
@4000000045d98c4a36d7cd74 at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1616)
@4000000045d98c4a36d7d544 at com.opensymphony.xwork.util.CompoundRootAccessor.getProperty(CompoundRootAccessor.java:102)
@4000000045d98c4a36d7dd14 at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1616)
@4000000045d98c4a36d80424 at ognl.ASTProperty.getValueBody(ASTProperty.java:96)
@4000000045d98c4a36d80bf4 at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
@4000000045d98c4a36d80fdc at ognl.SimpleNode.getValue(SimpleNode.java:210)
@4000000045d98c4a36d817ac at ognl.Ognl.getValue(Ognl.java:333)
@4000000045d98c4a36d81b94 at ognl.Ognl.getValue(Ognl.java:310)
@4000000045d98c4a36d82364 at com.opensymphony.xwork.util.OgnlUtil.getValue(OgnlUtil.java:190)
@4000000045d98c4a36d836ec at com.opensymphony.xwork.util.OgnlValueStack.findValue(OgnlValueStack.java:216)
@4000000045d98c4a36d83ebc at com.opensymphony.webwork.components.Component.findValue(Component.java:238)
@4000000045d98c4a36d842a4 at com.opensymphony.webwork.components.IteratorComponent.start(IteratorComponent.java:192)