Basically if I can prove out that v1 and v4 can coexist in the same website, we upgrade. If not we stay in 2.x and look for a different tool.

So two more questions, what version of ext.net.utilities goes with ext.net version 1.7?
What version of newtonsoft.json goes with ext.net version 1.7 and where can I get the source to namespace?

Thanks,
Robb