If you want to transfer projects from a PC that does not have GP-Pro EX installed, you can install the Transfer Tool onto this PC.
When the Transfer Tool is installed, the Version Reverter is also automatically installed. See the following for more details about the Version Reverter.
3.8 Converting Project Files to Previous Versions
You cannot install GP-Pro EX onto a PC installed with the transfer tool. Uninstall the transfer tool to install GP-Pro EX.
34.11.1 Operating Systems that support Transfer Tool