I purchased the pack TOPO France sud est V3 Pro (DVD + µsd) Garmin in December 2012.
With the map installed in my PC (Windows 7) and unlocked for my gps Montana 600 with the DVD : no problem when viewing this mapping in BC, even with last versions.
I use the original microsd Garmin in another gps (etrex 20). I’ve just noticed that when viewing the mapping from the microsd in BC 4.2.2 and 4.2.3., a vertical blue line crosses a part of the mapping. This blue line is visible at every level of zoom and details.
The problem occurs only with the .img and BC 4.2.2. and 4.2.3.