I'm working with Dorian on some file, and after changing some parameters, adding some SSS's, new add functions, etc, and 2 trees, sending the altered tgd back, he just can't open without a huge amount of errors. Could this happen between different versions of TG it's been saved in? I work on the latest alpha build 4.4.46, I guess Dorian is working on the latest public build (4.4.44).