Here's an odd one. I noticed the size of my merged driver.cab file for SP2 in Nlite 1.4.1 is 60,970,848 bytes (58.1 MB). With 1.4.5 beta2 that shoots up to 65,520,766 bytes (62.4 MB). The contents of both CAB files are identical, it just doesn't seem to be compressing them as well. I'm using the same exact .INI file for both runs. Maybe the "High Compression" option isn't being passed to the CAB compressor in the beta? I probably wouldn't have noticed except my resulting CD only has about 1 meg to spare and this chews up 3 meg. Thanks for a great tool!