RouteConverter and Mac OS X

[hvdwolf]

But I was able to start from the command line with the 64 bit build and the map appears, which fixes my problem.

That's good.

Snow Leopard is supposed to run 64 bit applications just fine when the kernel runs 32 bit - and that appears to be

Snow Leopard is ALWAYS running it's kernel in 32bit unless you tell it to start in 64bit. There's a .plist option for it or a [command] boot option. Just Google for it.

Your iMac is a core-Duo which can run 64bit applications. Java on SnowLeopard runs by default in 64bit mode (Check /Applications/Utilties/Java-preferences).