I just downloaded version 6 am using optimized compiling on my personal contact manager. I get the following error (Device or Windows): ------ Error compiling program. Error message: error C51502: The best overloaded method match for 'system.Drawing.Font.Font(string, float, System.Drawing.FontStyle)' has some invalid arguments. ------ I am using the FormLib.dll (dated 31 Oct 07) but I am not changing any fonts. I use it for: ChangeParent MinimizeBox AddContextMenu Any suggestions?