For the first error, your desktop is probably set on 16bit color... Set it to 32bits; should fix the problem. For the Bad file name or number error, I think we fixed it, but the next version probably won't be released before a while cause some stuff is being completly revamped. Do you get the error only for that map? If the error doesn't stop you from working on it, don't bother with it for now. You could try deleting the 'DCME autosaves' folder located in the same folder as DCME.exe (Do that while DCME is not running)