If it's useful (and not ungodly late), the Geomate.jr plug-in is not built as 64 bit. In any event, it won't run with 64 bit IE which I think has problems with other extensions/plug-ins as well. However,
I believe you can update the Geomate.jr on 64 bit systems using the 32 bit IE which is included at:
C:\Program Files (x86)\Internet Explorer\iexplore.exe
Haven't tried it myself, since I don't have a 64 bit machine.