The best advice that I can give you is to first look for a solution in InstruCalc's help file, but that's only possible if you're using a Window version older than Windows 10. Additionally, getting in touch with your company's IT department could also help clear things out. Lastly, if the problem is caused by the software itself, you would probably be best served by contacting the application's developers directly using this email address: support@chempute.com and asking them for a solution to your problem.