map trouble

[Astraea]

I made a map of my own on feralHeart MapMaker and I exported it correctly. But when I get into it from the portal it does this weird glitch thing where it flashes and lines go across the screen!!!! plz someone help me i cant play in my own map!!!!!!!!! 

[Redlinelies]

I myself is not really familiar with this, but you're able to test the map in map maker all fine yar?

Have you tried removing the exports and re-exporting the map once again?