The usual solution to this is
- Delete "Momoiro" folder from the "Appdata" folder in you user folder, directory should be "C:\Users\[USERNAME]\AppData\LocalLow\Momoirosoft". At the moment there's very little "save" data besides some settings that are saved
- If the above doesn't work and especially if your PC has an older CPU delete "Lib_Burst_Generated.dll" from the game files.
Sorry for the trouble, I'm trying to get these compatibility issues resolved, and fiddling with save data also caused some issues.