"Super Mario World X The Empire Of Bowser Demo 1" - Superyoshimitsu044
To produce a correct IPS, while in Lunar Magic, go to File>Restore>Create an IPS Patch for this ROM. It'll create an accurate IPS patch.
If it's not this, then i don't know what's the problem
The only other reason I can think of is that the ROM might not be clean.
Use this tool.
Use this tool.