Hi,
Note that ENVEL RESHAPE uses an envfile as the input, but ENVEL WARP uses a soundfile as input -- i.e., the extraction is built in. I don't see 'compress' in the list of functions -- which one did you use? Flatten? Gate? Limit? Ducked? (or is it named differently in your version of the software?).
It's not something I've used, so look forward to other answers.
ArcherCDP