This is a relatively rare, but known issue. Reloading the save, possibly multiple time, should fix the problem. A couple people with D:OS said it helped to join in an older save, or a new game, and then load the most recent one.


Please email supportdos@larian.com, with a brief description of the problem and the report.zip file generated by the D:OS EE Analysis Tool, for both PCs.
Extract the zip file somewhere, run the AnalysisTool.exe, browse to the install folder if it is not automatically detected, optionally run the tests first, and generate a report (it will be saved in the same location as the Analysis Tool).

The report will contain system and game information, as well as your saved games. To reduce the file size, you can delete all but one of the saves from the zip, unless new saves have a problem and older ones are ok, in which case maybe leave your most recent save that your friend can connect to, the oldest with a problem and the most recent.
Your friend can delete all saves from his report.zip, if he has any from a single player game, etc.