It looks like you have some uvs outside of the uv square on the left side there, it may not know what to do with that and so is crashing as a result. Just a guess, but overlapping uvs or uvs outside the square are generally bad news for baking. Worth a shot.
Alfred (AJ) DeFlaminis
Did you find this post helpful? Feel free to Like this post.
Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.
View Max Tips/Tricks Megathread