Not compatible with Factory Gateway.
For project files created by GP-PRO,
GP-PROII, GP-PROIII, GP-PRO/PBIII (DOS), and Parts Box convert the
screen data into *.prw in GP-PRO/PBIII for Windows and then execute
the GP-Pro EX's project converter.
"GP-PRO/PBIII for Windows
Operation Manual", Chapter 12 Using Existing Data.