Don't forget to attach useful files if you feel like they are relevant (sorted out):

• Screenshots (you can edit them to add a beautiful red circle made on MS Paint to help us identify the issue)
• Diagnostic files (located by default under "C:\Users\YOUR_USER_NAME\Documents\Endless Space 2\Temporary Files" -- for Mac users: "User/YOUR_USER_NAME/Library/Application Support/Endless Space 2/Temporary Files") and select the correct file by looking at the name like "Diagnostics - 2016'10'11 @1407'46''" that gives you the date and hour which should correspond to a save file)
• Output logs (one output_log.txt located under Steam\steamapps\common\Endless Space 2 in a folder named in the YYYY-MM-DD_HHMMSS format created in case of crash and one in the EndlessSpace2_Data folder -- for Mac users User/YOUR_USER_NAME/Library/Logs/Unity/Player.log )
• DxDiag (PC only): Attach a DxDiag report. This is only relevant if your bug has to do with crashing, artefacts or something. If it's only affecting gameplay, a DXDiag isn't necessary.
• Apple System Profiler (Mac only): Copy and paste the content of the Apple System Profiler report (do not attach the report file directly, we can't use it!)

Could be useful, to find a solution.