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Build 20080605 - open the Design Center (Alt+Shift+W or Window->Other->UML Design Center) if not yet open - expand the Design Center node - right click on DesignPatternCatalog and select New->Project - click OK on the Create Design Center Project dialog to accept the default project name - click OK to accept the default class name on the New Wizard dialog. a new diagram window opens - close the diagram window - right click on the newly created design pattern project and select Remove->Remove Project From Workspace Result: project not removed and ide log shows the NPE. See attached ide log for complete exception.
Created attachment 62440 [details] ide log file
also exists in 6.5
ops, searching for existing missed issue 86021. *** This issue has been marked as a duplicate of 86021 ***