Anonymous - 2005-03-29

I had 7-Zip 4.15b installed on Win2k a while back but uninstalled it. Now I had a zip file where I get an "Unknown Error" ("Unbekannter Fehler" in my German version) with the title bar saying "7-Zip". I solved the problem by re-downloading the ZIP-file (probably it was corrupt) but I don't understand why I get an error from 7-Zip after I uninstalled it.
I even re-installed and re-uninstalled it, I searched both the file system and the registry for strings like "sevenzip", "7-zip" and "7zip" but I found nothing suspicious. Where can I look for files or registry entries that are left over after an uninstallation.