HELP! Record of Lodoss War on Dreamcast

I recently downloaded Record of Lodoss War for my Dreamcast emulator NullDC. Every time I try to load the CDI it goes ntil the first all white Sega screen and then just stops and doesn't do anything! please help I spent all my points on this download and now can't even use it. Any suggestions will be taken into consideration!

Dreamcast emulation is far from perfect. Make sure you're using the latest version of the emulator and try changing the settings. If that doesn't work try a different emulator.

Please look for a emulators compatibility list on Google before posting.Try a different emulator, or different build on the emulator you are using if your issue is not resolved.