[Scorpion -]M15F1T[-]

for some reason radient is thinking its got more than 1 worldspawn
no real fix welcome to the buggyness that is radiant

what i found out about the error

This was all I could find about this error. This is a standard q3map error message, not a bug. Q3map generated a badly- formed BSP-tree from your map. Your map probably uses structural brushes in a bad way. One reason you will get this error is if you have made everything in you’re map, including the outer hull, “detail” Select ALL brushers that form the outer hull of you’re map, and make them structural.

This error can be caused by several problems. The two most common are start position in the void or start position on a floor with a detail surfaceparm. Make sure that you place the start position on a floor made out of a solid texture and that it isn't too close to a wall.