http://bugs.winehq.org/show_bug.cgi?id=17538
--- Comment #23 from Leszek Godlewski ineqvation@gmail.com 2009-11-18 11:41:34 --- I was using the native DLL (supplied with GP5). The built-in has another problem - after a while, it crashes with an "Invalid window handle" message box, but this I don't know whether it's a regression or not, because I've always been using the native DLL and it always worked perfectly, until it started failing. Which suits the definition of "regression", I think.