Get an error?

How to Fix the Error loading Standard Calculator

1.       Close 10 Key

2.       Uninstall 10 Key from the Program Group

3.       Find and delete this whole folder and it’s contents…   c:\Users\”Your User”\Appdata\Roaming\PentaCalc.  If you type %APPDATA%\PentaCalc in Windows Explorer it will take you to this folder.

4.       Reboot

5.       Reinstall 10 Key

6.       It should work now