Please 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). The report will contain system and game information, any crash dumps, and your saved games (which are not relevant, unless there is a specific place where this is consistent, or something, so can be deleted from the zip to reduce file size).
For the Mac version, include your system information (System Profiler).