Is there a technical error y the LDM's r so hard to execute?  I read some posts saying they changed this or that n the LDM executions became easier.   Is this true???   I'm also having trouble with this S1 fix.  I extracted the kof2003.zip contents, patched the S1 rom, rezipped it as kof2003.zip, refreshed n mame wouldn't recognize it anymore.  Am I doing something wrong?