A customer reported conflicts between Claris CAD 2.0 and DiskTop 4.0. DiskTop is a desktop launcher utility from CE Software. The issues involve this product and the Claris CAD 2.0 command key equivalents.
DiskTop comes with an INIT package called CE tools and another called DiskTop extras. With the DiskTop extras installed, you will see a menu just above the DA list and below "About the Finder". If you select the item DiskTop, and launch it, a menu comes up which allows you designate command key equivalents for GOfer, for example, Command-Shift-G. Command-Shift-G will intercept the Command-Shift-G for the Claris CAD Ungroup command, causing conflicts.
Solution: Undefine the hot-key combination or define it as something else which will not conflict with Claris CAD.