I've been a licensed user of EZSINO CSE 2007 since May 2008. It worked OK on XP and Vista Business, but today, it failed to open on my Desktop machine which is running XP SP3. It leaves an icon on the taskbar which can only be removed by using Task Manager. I've tried restoring back to date when I knew that it was working OK, I tried repairing and reinstalling it, but the result was the same. I've also tried to set the PC calendar date back to last year without success. What should I do?