i want to ask about import and export in zbrush 4 r2, recently if i used it always crash, and pop ups "internal error. \system.cpp line 252. what must i do??? can u help me… sorry for my bad english 
What type of file are you importing? How large is the file? What was used to create it?
i try export, import, saving document, and no one can work, i try to save a sculpt from demoproject folder in zbrush, and it always end “internal error…bla222” how to fix it?? i can’t create any sculpt , because i can’t save the project 