I have used Fireworks CS5 for many years now, and it has always worked perfectly. But for the past several days, it won't let me open the program. A message pops up that there is an internal error occurred. I can click okay, but when I do that, the same message pops up. The only way out is to do control-alt-delete, then task manager, then end the program from there. Have tried installing the latest update, researching the issue, etc. nothing has worked.