Storage location automatically changing at first capture

The following files are pre-configured with OutputFilePath and OutputFileAsFullpath being set to "${USERPROFILE}\Greenshot\" prior to deploying the application to a workstation:

greenshot.ini
greenshot-defaults.ini
greenshot-fixed.ini

On first launch, the Storage location is successfully set to the aforementioned pre-configured setting. However, as soon as the first screen capture is made, the Storage location is automatically changed to "C:\Users%USERNAME%\Desktop".

How can this be corrected?

Thanx.