Have you been able to fine another way? Something that does work? Could this be a cross platform issue?
I think alot of people are up loading the programs themselves, and not the install for the program itself. If there is no install file, the extra need files such as extensions are not included.
I've had luck with a couple of programs I've downloaded so far. But these were program installs, not the running programs them selves. If you are uploading the install program of an application, you don't need to use Disk image (at least in 9.1)and it's usualy aready stuffed.
Let me know if you figure out another way.
thank