getGroup cannot find group

[atarkowska]

Error in sys.excepthook:
Traceback (most recent call last):
  method tm_excepthook in test.py at line 65
    if e.args:
AttributeError: ApiUsageException instance has no attribute 'args'

Original exception was:
Traceback (most recent call last):
  method ? in test.py at line 12
    print admin_serv.getGroup(cx.groupId)
  method getGroup in test.py at line 286
    return _M_omero.api.IAdmin._op_getGroup.invoke(self, ((id, ), _ctx))
omero.ApiUsageException: exception ::omero::ApiUsageException
{
    serverStackTrace = ome.conditions.ApiUsageException: No such group: 5
	at ome.logic.AdminImpl.getGroup(AdminImpl.java:363)
	at sun.reflect.GeneratedMethodAccessor221.invoke(Unknown Source)
	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:310)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at ome.security.basic.EventHandler.invoke(EventHandler.java:105)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.orm.hibernate3.HibernateInterceptor.invoke(HibernateInterceptor.java:111)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at ome.tools.hibernate.ProxyCleanupFilter$Interceptor.invoke(ProxyCleanupFilter.java:169)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at ome.services.util.ServiceHandler.invoke(ServiceHandler.java:94)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy57.getGroup(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor221.invoke(Unknown Source)
	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:310)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at ome.security.basic.BasicSecurityWiring.invoke(BasicSecurityWiring.java:78)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at ome.services.blitz.fire.AopContextInitializer.invoke(AopContextInitializer.java:35)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy57.getGroup(Unknown Source)
	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 ome.services.blitz.util.IceMethodInvoker.callOrClose(IceMethodInvoker.java:257)
	at ome.services.blitz.util.IceMethodInvoker.invoke(IceMethodInvoker.java:179)
	at ome.services.throttling.Callback.run(Callback.java:55)
	at ome.services.throttling.InThreadThrottlingStrategy.callInvokerOnRawArgs(InThreadThrottlingStrategy.java:37)
	at ome.services.blitz.impl.AbstractAmdServant.callInvokerOnRawArgs(AbstractAmdServant.java:114)
	at ome.services.blitz.impl.AdminI.getGroup_async(AdminI.java:216)
	at omero.api._IAdminTie.getGroup_async(_IAdminTie.java:204)
	at omero.api._IAdminDisp.___getGroup(_IAdminDisp.java:431)
	at omero.api._IAdminDisp.__dispatch(_IAdminDisp.java:1309)
	at IceInternal.Incoming.invoke(Incoming.java:166)
	at Ice.ConnectionI.invokeAll(ConnectionI.java:2045)
	at Ice.ConnectionI.message(ConnectionI.java:977)
	at IceInternal.ThreadPool.run(ThreadPool.java:575)
	at IceInternal.ThreadPool.access$100(ThreadPool.java:12)
	at IceInternal.ThreadPool$EventHandlerThread.run(ThreadPool.java:951)

    serverExceptionClass = ome.conditions.ApiUsageException
    message = No such group: 5
}