I'm struggling with this issue, I patched the file in standard installation (6.2) on windows. No Way to fix, It's incredible.
Probably I'll migrate vs. other B.I. Software, at the moment we are considering to downgrade to a stable release and searching for other b.i. solution to provide to our customer.. 2 month of sales work are trashed.. I cannot offer the commercial release with this kind of bugs in the CE. Dear TIBCO, think about that, please.