So you don't have a recent save before that you can reload?

If you email supportdos@larian.com, with a description of the problem and the report.zip file generated by the D:OS support tool (for the PC version), someone will be able to take a look at the save, but not until after the 4th (when most of Larian gets back from vacation).
The report will contain system and game information, any crash dumps, and your saved games. To reduce file size, you could delete all the saves from the zip except the one during combat and the most recent working save.