http://bugs.winehq.org/show_bug.cgi?id=24496
--- Comment #5 from Jana Cavojska jana.cavojska9@gmail.com 2010-09-23 17:03:24 CDT --- I tried reinstalling both Wine and unixodbc, which didn't help.
What did solve the problem was to override odbc32.dll with a native library and to copy odbcint.dll from my Windows installation into ~/.wine/drive_c/windows/system32 (odbc32.dll needed it).
I already converted a few files in Format Factory and it seems like everything is working now. Thanks for your help.