I have discovered an interesting work around for the problem of Mapsource devouring RAM, and then freezing in Windows 7 64 bit.
My current MS version (6.15.7) works without problems with the new Oz/NZ map 2010.30, but crashes with Thailand v10, and SE Asia v4.5.
I have downloaded the exe file for Mapsource 6.13.7 ([Only registered and activated users can see links. ]), unzipped it, renamed it Mapsource (2), and then copied it into the 6.15.7 folder (without deleting the 6.15.7 exe).
You can then use which version you like, by having a shortcut for both on your desktop.
6.13.7 works without problems for Thailand 10 and SE Asia 4.5.
I understand the next upgrade of Mapsource (6.16?) will overcome the RAM issue, and I can then revert back to using only one version.
Last edited by Midnight Blues; 15th February 2010 at 02:02 PM.
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Very useful for me, as I am happy to keep the 3 maps I mention separate on my GPS/SD cards, and I have no need for the Europe map.
It also means I have functionality with Mapsource once again.
Others may have different needs and experiences.