Error 9

[Black Mamba]

When play testing a level, SMBX displayed this error.
The level has mutiple moving layers . There aren't any 1ups killed in lava so there goes that theory.

[AirShip]

If I'm not mistaken, this happens when some power-ups fall into the lava.

[Black Mamba]

oh. Thanks.

[bossedit8]

Yeah, that is basically it. If you have a level that takes a lot of process like having a lot of stuff running on it and if a Power Up (any kind and even Poison Mushrooms) touches a Lava Tile it will crash with a Error Number 9 Message.

[RudeGuy]

Make a .txt for the mushroom and put in it speed=0 to solve this problem.

[bossedit8]

Make a .txt for the mushroom and put in it speed=0 to solve this problem.

Tecnically yeah but as you can see at the screenshot, the Mushrooms are actually staying on a block and the lava is rising, I bet.