I am working on qGIS on a file with 1500 buildings (which rarely have only 4 bottom and top corners) and with the free version of RayMan. Through the shptoobs plugin I tried to convert the geometries inqGIS into an obstacle file for RayMan. However, several files are created (I am afraid it started a loop because it is still creating files) . Also, if I try to import one of the created files in Obstacles Windows, the following warning message is returned "ungültige numerische eingabe (invalid numeric input?). So my question is: do you know which is the problem? (maybe is there a limit of obstacles to be imported?)