Grasshopper has failed to deserialize some data of type

Hi Guys,

I have been getting the following error. Hopping someone would know what this means. Also this definition was created in late 2012, and i think its not working properly with the new version of grasshopper. This definition contains solar analysis which returns a colored mesh. Then a box morph of various geometries will be generated on the mesh. I really need this definition to work again. Your help is greatly appreciated!