Thanks, we got the level. I've now learned from Alexej that the blue tint indicates that the lightmapping can not be generated in A6 mode on this surface, either because the block is not convex or because the texture vectores are not perpendicular. Basically, that block shape or texture orientation is not compatible with A6 levels. You must generate an A7 level, which is recommended anyway. See the last remark in:

http://manual.conitec.net/WED_Funktionen21-Map Building.htm

Additionally, your level is extremely dark because the ranges of the lights are too small.