Hacking Rolling thunder not loading with gecko

[leeboy2k1]

Hi rolling thunder (j) arcade wad doesnt load with the latest version of gecko loader, it just says loading error press b then resets.

All my other recent jap wads work with gecko.. shinobi splatter house etc, can anybody help?

btw Im on wiikey 3.2U bootmii boot2 installed cios36 rev c.