Welcome.
There are 2 skin packs for SH3 Commander, the first you mention and the second is a skin pack for stock SH3 (+other versions).
Currently, both versions are NOT compatible with GWX 2.0. As you have found, you will get CTD's.
Besides, apart from the historical date aspect, the skins in GWX 2.0 are superior to the ones in the skin packs.
