Oracle Reports Builder starting with errors...

We have a developer that started using Reports Builder 10g and keeps getting errors when starting the tool:  

REP-0201: Zero or negative block size requested (Definition Manager Memory Subsystem)  

and then...  

REP-0069: Internal error
java.lang.NullPointerException  

and then...  

REP-0069: Internal error
java.lang.NoClassDefFoundError: Illegal name: oracle/dss/pds/bibeans/xrpds/XRPDS  

After OKing those errors he attempts to open a report but continues to receive errors.  

Myself and other DBAs have been able to start Reports Builder with no errors.  

We all Citrix into a Windows 2003 box where Reports Builder is installed.  

Our environment variables match the developers.  

I poked around Documents and Settings trying to find an Application Data or Local Settings folder related to Reports Builder, but found nothing.  

I googled and checked Metalink but have found nothing related to receiving these error message when simply trying to start the tool.  

Help? Ideas?  

TIA.   Chris  

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