Unfortunately you force users to copy applications to /Applications/. This is not necessary and developers should not think they know better than the users where to store a particular piece of software.
Have your warning, tell me it won't auto update. But don't cause the application to refuse to run otherwise. That's just ridiculous.

Unfortunately you force users to copy applications to /Applications/. This is not necessary and developers should not think they know better than the users where to store a particular piece of software.
Have your warning, tell me it won't auto update. But don't cause the application to refuse to run otherwise. That's just ridiculous.