Hetzen makes good points. I've looked at the scene in a text editor - it's VERY complex. It's also very large (over 1 MB) for a TGD. But when I was scanning through, I noticed three places where there was information stored inside <custom> </custom> tags - all three were inside painted shaders, and had something to do with blobs. Does that mean anything to you? Anyway, when I deleted these three custom tags, and saved, the file size dropped right down, and I was able to load it. I got 35 errors, but those all related to missing images or objects. Presumably if you save it to the same place in your file structure, it should open without errors. Here it is.
EDIT: the contents of the <custom> tag is ENORMOUSLY long, and looks like it's in binary - so that must have been the problem. Were you trying out some experimental plug-in of your own??