I have been developing programs for 64 bit Windows 10 using version 1.6.4 without any problems until a few weeks ago. There have been a couple of Windows updates since then which I CANNOT undo because of the Microsoft 19 day rule regarding updates. However, all of a sudden I can no longer compile programs that were running quite successfully because at least two options are either no longer working or crash the compiler. The FORM COLOR property does not work now, and the STRETCHDRAW instruction crashes the compiler. Attached is a sample of the errors that are generated. Has anybody else encountered this problem? Does anybody know a fix for the problem? Thanks for any help.