Hasta La Motion!

I have a really annoying problem with Particular 2.1.2 and Nuke 6.2v2.
Particular crashes really often when I do changes in the settings and sometimes it fills the viewer with a solid red colour. Anyone that has experienced something like this? It’s the demo version of Particular.

I get this error message in the console when I open up the Particular node, Nuke still operates, but this message is repeated every time I open the node.
"Warning: EndTabGroup with no matching BeginTabGroup."

I have re-installed Particular and Nuke, but it seems that nothing helps.

Cheers