here's more stuff to check. 1.check the website of your CD burning software, see if newer versions of window files have conflicts with your software(some programs overwrite dll files without asking). If you need a specific file for this try www.windrivers.com 2.Are you using B4 and if so have you had the B5 demo installed? If so scan your registry for B5 entry's and delte them. 3.Do you a zip-folder utility intstalled? In certain conditions these can casuse an 'insufficient permissions' type error. the easiest way round this is to COPY a file to a new location. If you UNZIP a backup to a new location, some progams won't be able to use it. That's all I can think of for now!