Slow Running - "File does not exist"

My file is running slowly particularly whenever I try to copy anything - even 2D Lines. I’ve tried purging, but it didn’t seem to help. Oddly when I copy something the command lines runs through saying “File does not exist…texture”, when I have purged textures, and am not even trying to copy any.Anyone know how to get rid of this info to make things run better?Rhino-Example

can you identify where that texture is supposed to be? check your materials and see if any of them are missing a bitmap. If so, simply remap it.

if not, a trick i’ve used is to export out as step and then open a completely new file, then import the step data in… this will “wash” that data and remove anything attached to it.