The file (or a file on which this one depends) may be missing or damaged. You must replace the file with a new copy. Follow these instructions:
1. Download a new copy of Addit! Pro (http://www.byteforge.com/products/ap_fs2002/download). The archive you currently have probably contains damaged files so don't rely on it -- get a fresh copy! 2. Use Add/Remove Programs to completely remove Addit! Pro. 3. Go to your Windows\System folder. Delete the file you're having trouble with. Note: this step is important -- you must remove the damaged file completely. 4. Reinstall Addit! Pro by following the instructions listed in Article APFS2002S5 (http://www.byteforge.com/products/ap_fs2002/support/article_apfs2002s5.htm).