Rhino crash with Kangaroo physics timer

I've recently downloaded the latest version of Grasshopper and now when i try to connect a timer into Kangaroo physics Rhino crashes. It also crashes when i try to open any Kangaroo files that i have created previously. It all worked fine before. I have also recently downloaded the SSI plug in which i thought could have affected it. I've tried taking out the SSI files from the plug ins folder, reinstalling a previous version of Grasshopper and updating to the latest version of Rhino but no luck so far. Does anyone know what could be causing this? Any help would be much apreciated