问题
I keep getting this error:
Jan 31 13:56:51 Michaels-MacBook-Air.local CocoaDrawing[2129] <Error>: The function 'CGContextErase' is obsolete and will be removed in an upcoming update. Unfortunately, this application, or a library it uses, is using this obsolete function, and is thereby contributing to an overall degradation of system performance.
My program doesn't call that method directly, and frustratingly, I can't find any documentation on this function.
This happens even with a blank (Cocoa) Xcode project. Why am I getting this error?
回答1:
I had this problem. It was caused by an outdated Wacom Tablet driver. If you have such a driver installed I'd recommend removing it, then reinstalling a more recent driver. That did the trick for me.
来源：https://stackoverflow.com/questions/21488070/cgcontext-erase-error