Ok All....I was getting the following error message when trying to install software for an HP All in One L7780....
Fatal error
Invalid Drive E:\
Please go to http://www.hp.com/support for troubleshooting information about “Fatal Error” and “MSI.networkdevicemanager01”
I spent over 5 hours on the support chat with HP. They told me to do many different things....all things not working. They even asked me to correct value data for the registry key....this suggestion has been mentioned on this thread...
Well I think I found the simple fix....
I frequently use a flashdrive and when I do, it assigns the drive as DRIVE E.
So I tried to install the software with the flashdrive inserted in the USB port and BINGO! It worked like a charm.
If you have a similar issue...try this first. It might be the easiest fix.