I have nearly the same problem, but in my case one of my geo_map shortcodes work, the other one is rendering the shortcode in plain text:
Shortcode working:
[geo_mashup_map map_content="global" map_control="false" add_map_control="false" map_type="G_HYBRID_MAP" add_map_type_control="false" add_overview_control="false" width="700" height="350" enable_scroll_wheel_zoom="false" remove_geo_mashup_logo="true" background_color="FFFFFF"]
Shortcode NOT working:
[geo_mashup_map center_lat="-21.9" center_lng="21.0" zoom="6" map_content="global" map_cat="-37,249" map_type="G_NORMAL_MAP" add_map_type_control="false" map_control="false" add_map_control="false" add_overview_control="false" cluster_max_zoom="0" width="700" height="470" enable_scroll_wheel_zoom="false" remove_geo_mashup_logo="true" background_color="FFFFFF"]
Any help is really appreciated, thx in advance.
