As far as I know exe files don't normally work with Mac. Mono is the framework to allow mac to read exec files. Crossover does it by running windows base frameworks (Net Framework) to do the grunt work for it.
I opened the app and I see Mac OS folder with two exec files. One of the exec files is tagged as usable by crossover.
Basically, once the app opened, nothing happened. No CKAN explorer popped up looking for KSP folder, nothing. Something is not talking. Let me play around using bash and mono and try to figure it out.
I opened the app itself and clicks on the Exec file for bash, this what was in bash.
Therins-iMac:~ therinwhitten$ /Volumes/CKAN/CKAN.app/Contents/MacOS/CKAN ; exit;
Just that.
Wait! we got wake up! One sec. Let me play some more. I think it is working. I want to try to find what changed for you.
Final Update! Mono 32 booted up and ran CKAN.
Step 1: Double Click DMG File
Step 2: Accept and Open App
Step 3: Right Click App and click "Open Contents"
Step 4: Click on Bash Exe, Watch to ensure bash binds with Mono
Step 5: Move App from mounted Image to Applications Folder
Profit!
CKAN Now opens without bash being open. Weird. It is good now. Works great man! THANK YOU!