Copy the contents of the spreadsheet to a new one, and deleted the old one (it wasn't a particularly important spreadsheet, thankfully), and everything was fine.I can only assume that somehow the file had become corrupted.I opened this spreadsheet, checked that this was still working and autoupdating with current installation of MS Excel and any new automatic office updates (which it did work with), and then just reopened the original spreadsheet. In my instance I was using a particular add-in called PI Datalink.Somehow PI's Calculate method was no longer running during the normal workbook recalculate.
Is there any mistake in computer or any other issue? The system timer auto synchronizes itself with a time server over the internet.In Settings I had to change Automatic Update command to Full Calculate and then back again.Once the original setting had been restored, the add-in ran as normal.Just kidding, it may be a CMOS issue, such as a dying battery. The Moto Calc Workbench Specifying Motor Information Specifying Battery Information Specifying a Drive System Specifying a Speed Control Specifying Airframe Information Specifying Restrictions Options What is a Database Browser?