RQM Project Area errors, maybe corrupted.

I'm experiencing a series of errors in our main project area. When testing simular functions in my local 'sandbox' i don't see these errors, but experience a few new errors. I considering if our project area might be corrupted. The errors descriped are all verified on other pc aswell to eliminate local pc issues.

I'm running on a RQM 2.0 I20090713_1659

Major errors experienced.
1.) Working from TestPlan/Testcase view adding(Green cross) existing Requirements to the Testplan produces this error, just by clicking the icon.

java.lang.string.incompatible with com.ibm.team.workitem.common.model.identifier

2.) From View Test Plans, changing view to Tree or Explorer view, when expanding the Testcase level i recieve this error.

Unable to load /jazz/service/com.ibm.rqm.integration.service.lintegrationServices/resources/MAN%27s+DKMS/testcase?xpath/testplan+and+/testplan status:500

On top of these im recieving a number of small issue on our 'main' project area, which all work perfect in another project areas. and some of the other areas then displays some errors which work perfect in my main area.

Please advice if its in anyway/possible to 'start over' re-installing RQM and exporting/importing the entries created, without 'tranfering' the maybe corrupted data.