I can't get sonic chronicles to load either, im using a Cyclo DS on firmware 1.5 Beta 3, wouldn't load. I reformatted my 8 gb SanDisk SDHC card, can't get it to load. I tried the ARM7 patch, that wouldn't get it to load. I even tried on the current firmware 1.41, that still didn't work.
(btw, every other game runs flawlessly)
What other suggestions might there be?