So I've created an app using py2app. It has a rather large number of dependencies but I've managed to make it work on my PC (Mac OS X 10.5.8). However now I'm testing it on a different machine (still a Mac OS 10.5.8) and it won't work.
It crashes right from the start with a :
zipimport.ZipImportError: can't decompress data; zlib not available
I've checked and zlib.so is in lib-dynload. What could cause this?