The only version of Creo 2 available for download is M250.
All files created in any build of Creo 2 should be able to be opened in any other build.
Your customer on M110 should be able to open files created in M250.
If they must have Creo 2.0 m110, then have them zip their loadpoint folder and burn it to a DVD and send it to you.
There are no registry settings that need to be installed, so a copy of the loadpoint files copied to another computer works fine. I do this for my server installation. I do the load onto a local server, then copy the files to a shared network drive location. All users are executing against a single installation. Makes updates a lot easier. I do have a custom script that the users use to launch Creo as I am working with 2 groups (and 2 Windchill) that have different operating conditions.