at me it happened after Migrating an Texture from my other map what cause the Crash
not sure if is the function in the texture or the Migrate Process in general
Filed a report hope there is a fix because there are 60+ hours work in that map 
at me it happened after Migrating an Texture from my other map what cause the Crash
not sure if is the function in the texture or the Migrate Process in general
Filed a report hope there is a fix because there are 60+ hours work in that map