Totally broken on Mac

[routeconverter]

I already pointed out, the problem was indeed the 'Gatekeeper' issue and I now have it running.

Great!

But, the first error message and refusal to run stated that I needed Java 6. I already had the LATEST Java 7, so why is it asking for 6?

Because I'm using a JavaApplicationStub, a small program that finds and starts Java, from the Apple Java 6.
Unfortunately Java 7 is provided by Oracle and uses a completely different JavaApplicationStub - and I don't have access to a Mac to find out how.

Then when I installed Java 6, I was told RouteConverter was damaged and should be thrown in the Trash.

To avoid that, the .app needs to be signed - which AFAIK can only be done on Mac OS X.

My point is that the error messages are entirely misleading.

You're right. I'd appreciate any help from Mac users to uses the latest JavaApplicationStub and do the signing on Mac OS X. Spending 1k€ just to get a recent Mac is no option for me.