CAMS2_83 has problems with modelmaps_engine. It seems to have to do with how "best" freq is chosen, where the chose freq can't be read by cams2_83, leading to a crash

It also seems to be a problem with the list containing save locations for geojson, where the list splits the path into individual chars. Seems to be due to use of files.extend(_files) on a string. Might not have any actual consequences, since the files are never used