http://wiki.openstreetmap.org/wiki/OSM_Composer

I guess you could try the German version which is at v0.77
http://wiki.openstreetmap.org/wiki/DE:OSM_Composer

Have you tried downloading the data to a file then feeding that file to OSM Composer? OSM Composer might be able to read v0.6 osm data from a file even if if can’t use the api to download it.