Hello mlopata,
Welcome to the HP Forums!
I understand you're receiving a message "The system cannot find the file specified". What is your exact model number? Click here to find out. Before you reinstalled the software, did you receive any error message indicating why you were unable to scan a document?
Did you uninstall the software on your computer first, then reinstalled the software?
How is this printer connected? Wireless or USB?
Please verify this information and I will assist you further.