Something randomly happened as i started working on my smw hack it started resetting itself
heres a video showing it in one of the levels:https://www.youtube.com/watch?v=cJcH9srNm9g
Maybe the incorrect use of bonus blocks may cause the game to crash?
all the blocks are 1 life which makes the rom slow down I think too much sprite makes you try to delete the 1 life block by a 1 piece block.
if it still doesn't work you may have to use the restore point or at worst copy and paste the levels and overworld to a clean rom.
sorry my English is bad
If it doesn't work, you can create a new rom and copy every levels/ExGFX/Map16 and overworld in the new rom.
yes, you have to do it all over again in my opinion, maybe also a use of too much incompatible patch or another good luck I already had this problem always make a copy of his rom!