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Error Updating Planned Time using 3.x eclipse client with 4.x server

Hi all,
When testing a 3.0.1.4 eclipse client against a 4.0.0.1 server we have noticed that if you open a work item that has time logged against it, you receive the following error:
Has anyone else seen this? Anyone have a resolution?
Many Thanks,
Robin
When testing a 3.0.1.4 eclipse client against a 4.0.0.1 server we have noticed that if you open a work item that has time logged against it, you receive the following error:
Error running operation 'Updating Planned Time'java.lang.ClassCastException: com.ibm.team.repository.common.transport.internal.services.impl.PrimitiveArrayDataArgImpl incompatible with com.ibm.team.repository.common.transport.internal.services.ComplexDataArg java.lang.ClassCastException: com.ibm.team.repository.common.transport.internal.services.impl.PrimitiveArrayDataArgImpl incompatible with com.ibm.team.repository.common.transport.internal.services.ComplexDataArg
Has anyone else seen this? Anyone have a resolution?
Many Thanks,
Robin
One answer

Yes there is a defect for this issue.
You can track the changes by subscribing to below defect.
Exception running 'Updating Planned Time' when opening task using 3.0.1.2 RTC Client against 4.0RC1 server (202895)
The fix for this might be part of 4.0.3 release.
Comments
Jayson Dai
Jan 31 '13, 11:56 a.m.We upgraded our server from 3.0.1 to 4.0 and we started to get this error when opening an WI with the 3.0.1 client. Is this a defect?