Hi Erel, There is an error in Basic4PPC in detecting system date set to 29th Feb 2008. it could be in the calendar control or the IDE.. as system reported: When I tried to continue my project today (29th Feb) and run them, there is an error: Error loading program Value of '2008' is not valid for 'value'. 'Value' should be between 'Minimum' and 'Maximum'. Parameter name: Value If I changed the system date to 28th Feb or 1st March and run the project, there is no error. It could be the calendar control in the IDE not detecting 29th Feb 2008 as a valid date as when I tried loading an earlier version (without calendar control) there was no error at all. There is also no issue running compiled EXE on the PDA on 29th Feb with calendar control added.