Compact Framework Remote Performance Monitor Error connecting to a device

I am trying to do a memory profile on a .Net CF app. It was originally compiled in 2.0, but I converted it to 3.5 so I can use the 3.5 CF PowerToys Remote Perf Mon. I am getting the following error message when trying to connect:

ActiveSync device: transport incompatible.

I am connecting via DMA thr开发者_开发问答ough ActiveSync, should I be doing something differently?

For whatever reason RPM doesn't work with the emulator before CF 3.5 SP1, so if you're targeting the emulator (which is seems you are) make sure you have the latest version of RPM and have manually deployed the RPM bits to the emulator.