Felix,
3. delete 1/3 of the lines in my polygons style-file or delete this last section: leisure=* & fixme!=yes & import!=* [0x2a resolution 24] tourism=* & fixme!=yes & import!=* [0x2b resolution 24] sport=* & fixme!=yes & import!=* &sport!=skiing &sport!=ski [0x2c resolution 24] landuse=* & landuse!=commercial & fixme!=yes & import!=* [0x2d resolution 24] natural=* & fixme!=yes & import!=* [0x2e resolution 24] amenity=* & fixme!=yes & import!=* [0x2f resolution 24]
Looking at 63650004.img, it uses 66 line types and 67 area types. What happens if you reduce both/either of those numbers of types to less than 64? Mark