Although any other type of video file (mkv, wmv, mpeg, mpg, vob) works perfectly OK with BSweet, something goes wrong with .avi files and I get the error message shown in the pic. The strange thing is that .avi files play OK using other players I have, and believe me, I have a LOT of them (Winamp, VLC, MicroDVD, PowerDVD, Media Player Classic, Zoom etc). The .avi files I'm trying to play are encoded with codecs like DivX 4/5/6 and XVID MPEG4.
I tried E-V-E-R-Y-T-H-I-N-G suggested in the FAQ section. I had the K-Lite Codec Pack and the latest DivX version installed (BSPlayer included in the KLite pack doesn't open them also). As you recommend, I removed them, had the registry cleaned up with CCleaner, then installed DivX 3.11 alpha and the latest version of ffsdshow. As for the codec verifying programms that you suggest, they mutually contradict each other. For example, for an certain file, both Video Inspector and AVICodec say that the video and audio codecs are properly installed, but the file doesn't open. For another file, AVICodec says the video codec is missing, but Video Inspector says the video codec is OK. Any help would be REALLY appreciated.