cGPSmapper fails to convert OSM maps from MP to Garmin img

The correct forum for any discussion of these particular garmin files is here: http://forum.openstreetmap.org/viewtopic.php?id=2625.

As I stated earlier this is just one of many maps for Garmin made from OSM data.

These maps are produced using mkgmap, and the issues you raise may relate to the fact that mkgmap does not handle garmin address searching, except in a special code fork.

Therefore you have not provided enough information for this question to be answered.

More significantly, I feel that this is not the appropriate forum for this question: OSM Help cannot be expected to be able to provide debugging advice on every product based on OSM, especially as these include blankets and clocks!

To be at all useful the following information should be added/included in the question:

• Producer/supplier of OSM-based Garmin tiles
• Area of the world covered
• Date of the file (most suppliers will create new map tiles every week or so)
• The nature of the small changes you have made.

From context I assume you mean a Garmin format IMG file based on data from OSM (OSM do not produce maps, OSM is a store of geographical data). There are probably over a 100 different suppliers of Garmin maps based on OSM: many of these, but not all will use mkgmap to produce their map files. Mkgmap relies on an incomplete understanding of the format of Garmin map files, and thus might not accord to Garmin's internal description.

You are also referring to two separate products, one of which, cGPSmapper, is proprietary and closed-source. Neither belongs exclusively in the OSM ecosystem., and therefore there is unlikely to be a strong pool of expertise on these products here.

I would suggest a general GPS forum, (possibly) the mkgmap talk list, the discussion list/forum of the map producer or any fora which exist on cGPSmapper & GPSMapEdit are all more likely to elicit knowledgeable assistance.