If you can't enter the mlo or walk the entire melo, you have a collision conflict. (.ybn)
Conflict
If you encounter conflicts with other mappings, check if you have this in other mappings with a simple search, and remove duplicates in other mappings, then check if you have a problem with the other mapping in question .
kt1_15_r1_gnd_s.ydr
kt1_15_rest_01.ydr
kt1_15_decal_04.ydr
hei_kt1_15_long_0.ymap
kt1_15_long_0.ymap
hi@kt1_15_0.ybn
kt1_15_0.ybn
Compatibility
You use Gabz Cat Cafe ? This compatibility patch
After delete kt1_15_0.ybn and hi@kt1_15_0.ybn folder on cfx-gabz-catcafe\stream\vanilla.
You need also delete this files on the foldercfx-gabz-mapdata\stream\gabz-iplblockers\catcafe