You can only install the Isah update when you are using the software versions as specified in the following table.
Software  | 
Required Version Number  | 
Isah  | 
4.5 or higher  | 
Current Database Version  | 
4.5 or higher  | 
Note: If you are updating from Isah version 4.5, please uninstall the Isah software (database patch excluded) before installing the new version.
To check which software version you are using: