I remember fixing related bug sometimes this year, are you svn trunk or nightly release?
Well, I'm not sure if I get your point. I downloaded and installed current release 3211 from link http://sourceforge.net/project/downloading.php?group_id=9397 0&filename=upp-win32-3211.exe(Win32 installer), if that's what you mean.
I actually downloaded fresh svn sources, but I'm not sure about how to use them. Should I just replace the installed C:\upp\uppsrc folder by the one I downloaded to ...\my-upp-mirror\uppsrc and click on "Rebuild All" (IDE toolbar bomb button)?
Do you think it may work and eliminate the problem?