still getting the errors even with the fix, gonna uninstall and try clean again
Edit: just to mes around, i uninstalled the product
but left ALL template modifications in as well as the file includes My forum showed up again, however the forums were missing (obviously due to the if condition being false) Don't know if that info's any help or not, but i have been having both the encoding errors and the bad argument bug.
This was normal index.php btw. I tried tabindex.php and got the bad argument error still
Update: installed clean again, same errors

I have the encoding error when i load index, and the bad argument error loading tabindex