Sometimes the helper.dat or config.dat files (which store your graphics settings) get corrupted. If the game crashes while loading a save, try deleting everything in the folder except savedata.dat . The game will regenerate the settings files on the next launch. Moving Saves to a New PC
The most common reason save files "don't work" is that they are placed in the wrong folder. Unlike modern games that use the "Saved Games" folder or Steam Cloud, DW4 Hyper stores data in two potential locations depending on your Windows version and installation settings.
Is the game , or just showing a "No Save Data" message?