Based on my experience, the game runs much better on a single drive. So, my advice is this: save the map (both the new and the old one). If you have a licensed version, reinstall the game on a different drive. If you're using a pirated version, and the above doesn't help, there's likely some incompatibility. Try the version by xatab (not advertising, just suggesting), which is what I use. P.S. I deleted your map; it's your property. P.P.S. I just checked, Swordmaster, not xatab.