With the release of V3.02, the problem mentioned is fixed.
CTA 3.02
1) Function and Content Enhanced:
Added: Fully supports video textures (.MOV and .MP4) on the Mac version.
2) Bug Fixed:
Fixed: Program crashed when clicking Body Puppet on Motion Library Vol. 1~3 Content packs.
Fixed: The default binding was set to "Double Bind" when using "Add Image" to make a new layer in the Layer Manager.
Fixed: Memory issues caused the program to crash when selecting a character or entering Composer mode on a Mac.
Fixed: Some props with a color gradient (ex. Cloud on G3 Beach Scene) would not render correctly on a Mac.