Passolo Translator Edition throws errors and won't save files in multisession Windows


We are using several versions of Passolo Translator Edition on multsession Windows Virtual Desktop machines.

We regularly get Passolo throwing error messages reading "The device object parameter is either not a valid device object or is not attached to the volume specified by the file name"

Also, this often happens in correlation with work being lost - the translator will save manually, close the file, the timestamp will indicated edits, then when the file is reopened, the saved edits will not be there anymore!

I am pretty sure that the multisession environment is causing this, but I can't figure out where and what could be done to work around it. Any ideas or suggestions would be most welcome!