-There are .bak files in the folder, you should delete those.

-Missing reqiured sprites. (To find out what those are open spr.gif in the docs folder of your mugen.)

-The sounds vary greatly from move to move, some don't even sound like Ruika and other the quality is meh. If you want I ripped Ruika soundbits from the DS games, and you can use them as long as you give credit. My site

-sprite 9000, 0 looks ugly and reason being is that you don't have it positioned in .sff at either the front or the end. To fix this use the organizer feature to manually move sprite 9000, 0 to the back. (Note that afterwards reapply sprite.)

-AI is able to pull of combos that no person can ever hope to pull off.