@VW2
That's fair comment if the correct interpretation of zakon's posts is that he's not having problems installing in MapSource because of using that workaround, but i think he means he's not having problems using an image in his unit which has been generated by MS, and he's asking what are the reported problems with images made with MS. If so, the short answer is MS is old and unsupported and simply does not handle large modern NT gmap folders very well. Those are meant to be used with BaseCamp & MapInstall exclusively for image compilation. There are differences in the way that MS & MI compile images, which can be seen in the resultant slight size differences to put it in the simplest terms. Any further in-depth examination of this 'problem' is off-topic however, and users need to simply forget using MS for compiling images of modern NT maps and just use MI instead. That advice is coming from me as a user who would prefer to keep using MS over MI. The problems may never surface or they may crash your unit during peak-hour in some large foreign city.