The Design 3D CX 7.0.5 updater can be found here:
NOTE: The 7.0.5 update is NOT a Design 3D CXi update. Software purchased through the Mac App Store will be updated through the App Store.
Special Note: If you downloaded the Design 3D CX 7.0.5 updater on Tuesday, January 22, 2013 please delete that file and replace with this one. The previous 7.0.5 updater had an error. Run this newer updater to patch your copy of CX 7.0.5.
The Foto 3D CX 2.1 updater can be found here: