I've noticed for a while that the error given by Casper Admin when you attempt to add a .app file makes no sense. For example, attempting to upload the Box Edit installer "designed to work with...Casper Suite" fails and presents the following error message:

I'd get it if it just didn't support .app files, but this error message is saying it does while failing to upload them. That's confusing at best. It leads me to a handful of questions.
- Why not just say, "Casper Admin does not support .app files."?
- Does it actually support .app files but literally every one I have ever attempted it with just happens to be badly formed?
- If they are supported, is there something special that needs to be done to get them to upload successfully?
- Why are some .app files listed on sites as specifically made for use with Casper if they are incompatible with Casper?
