Locked Up

CrossDJ refuses to start on my iMac. It was running fine and then I talked to tech support about why I couldn't post on the forum. My profile was updated by support to have my serial number. Now I can post topics but CrossDJ refuses to start. I removed the software, restarted my iMac, reinstalled the software and all that happens is the main window comes up and then the cursor spins and spins. I have waited an hour and then force quit the app and tried restarting. Same behaviour.
Model Name: iMac
Model Identifier: iMac10,1
Processor Name: Intel Core 2 Duo
Processor Speed: 3.06 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 3 MB
Memory: 12 GB
Bus Speed: 1.07 GHz
Boot ROM Version: IM101.00CC.B00
SMC Version (system): 1.52f9
Model Name: iMac
Model Identifier: iMac10,1
Processor Name: Intel Core 2 Duo
Processor Speed: 3.06 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 3 MB
Memory: 12 GB
Bus Speed: 1.07 GHz
Boot ROM Version: IM101.00CC.B00
SMC Version (system): 1.52f9