In early December, 2014 a number of our customers started reporting an issue with some of our Excel spreadsheets. Basically that the buttons on those worksheets were no longer working. We have now determined that this problems is a direct result of a Microsoft security update (KB2553154), that has inadvertently disabled the capability of the buttons within all Excel workbooks on the affected computers.
Here is a screen shot from an Excel workbook that uses a button to execute a macro. If your computer has been affected by the Microsoft security update then the button will not function.
A workaround to this problem can be found in our Frequently Asked Questions section. Refer to the following link to access that solution.