Problem Formula Protection


I have just downloaded the trail version of XLS Padlock. When I compile a workbook without formula protection XLS Padlock works but when I use the formula protection and afterwards compile the workbook, I receive the Error message “Excel has failed to open the protected workbook…”. I have downloaded the demo version with the formula protection. This works. I am using Excel 2007.

Could you give me an advice?

Maybe you protected cells that use Data Validation? This can cause the error you mentioned.