Hello,
This problem seems like something described in the following Knowledge Base:
http://digital.ni.com/public.nsf/websearch/2FCAAF080951FCAB86256982007AA16C?OpenDocument
This Knowledge Base basically states that something may not have been installed correctly. It walks through how to completely uninstall the Report Toolkit.
Let me know if this doesn�t help out. Have a great day!
Ken S.
National Instruments