"Cannot backup into the installation folder" error

I am getting an error message when trying to back up my Cashbook program. 

Error message says:

This message appear when you try and save a backup into the installation folder of the Cashbook Program. 

1. When selecting a place to back the data to select any place on the computer, if this is where you want to save it, or an external hardrive.

2. Select Browse and then another location for your backup to be saved to and this will fix this issue. E.g: My Documents or Desktop.