New BEx query generation error

Hi everyone.

I have upgraded from BW 3.1 to 3.5 and I am facing some error messages when attempting to create BEx queries from InfoProviders (that are good and loaded with data).

When click the "new query" icon from the BEx GUI I receive the following error/warning message:

"Internal error when generating the history. Use a different view"

Then, when clicking "OK" and when I proceed to select an InfoProvider for my query I receive the following fatal error message:

"Run Time Error 91: Object variable or With block variable not set". BEx then terminates.

Any comments or suggestions to these issues? Any feedback would be highly appreciated.

Regards