Hi all, 
Sorry if this has been asked and answered, but I couldn't find anything on the forum so...
A few days ago my three year old attacked my X2 based DAW and did who knows what to it. I managed to repair all the damage except for a problem with the Arp. presets. They are simply gone. If I go into the actual disk folder the arp files are all there, but in X2 they are not listed at all. I've been hunting for a defaut setting, much like what is listed in "Preferences/Folder Locations", but have not been able to find anything that refers to the Arp. presets. Is there a hidden setting somewhere that I am not seeing?

In X2 Produer, the path is in the registry key ArpPresetFolder in HKEY_CURRENT_USER\Software\Cakewalk Music Software\SONAR Producer\X2\UserPaths

Thank You!!! That was exactly what I was looking for, somehow that reg. key was deleted. Problem solved.