My Own Webpart to access K2 process data

I am trying to build my own sps webpart (which I know how to do very well) but I am running into some issues trying to use the K2ROM from within my webpart.

I create a reference to the K2ROM.dll then when I try to connect to the K2 server I am getting a runtime error but the try catch block does not see to be working, instead I get the dreaded "Your webpart appears to be causing a problem" message.

To make things worse, my debugger has decided to not allow me to attach to the running instance of w3p...

So let me ask how did K2 themselves write your webparts? Are they talking to the Object Model or are they using the webservice?

Does anybody have some source (C#) of a webpart talking to K2 that they might share?

Thanks, Mike