[Instant crash when editing mesh...]

Thank you so much for this information! It WORKS!! Yay! I have looked all over and no one seemed to know how to help, not even the creator. Kudos and thanks again ~

[Underwear - system or mesh?]

I would always use system and NON-Mesh Clothes in general. All of the mesh seem to be in standardized sizing lately and it almost always requires you to change your shape. Granted its a moderate change but IMO if I am going to spend 1000L+ on my shape .. I want to keep it. May be old school SL but its only my opinion.