I finally got on to a PC long enough to look at the specifications for this device and they are...
320x240 screen
64MB RAM
2GB internal flash
Micro SD up to 2GB
Windows CE 6
500MHz processor
About the error, I'm not 100% sure what is causing it, sometimes it's caused by loading an incompatible dll, or i've seen sys.txt entries relating to hardware which also causes the same error.
However it must be something device related as chas521's build has been installed by many users without issue, Looking at the device specs, a simple build of Primo will probably work so download this...
http://www.navitotal.com/showthread.php?8452-iGo-Primo-2.0-Release-9.6.2.209584-October-2011Look for the Get Download the full version spoilerAt time of posting Link one was alive,
Click the free tab to access the download button.Rename the folder\file.exe as before and copy to device, and try again.