There is no Mac support tool, since the built in programs can easily collect all the required information. Below is what I was told for Mac, though if you email supportdos@larian.com, or post in the forum, they will let you know if they need any additional information:
Crash report is more than enough to diagnose anything. Even if it looks weird it's very good stuff.
Crash report is redundant; all the ending part (list of libs) can be omitted.
Users should use "System Profiler" to collect system info.
To diagnose DOS hang user can launch "Activity Monitor" then select Divinity and press "Sample" button. Resulting sample should be mailed to developers.
Crashes are never lost. They are collected inside the "Console" application.
