Hi Michael,

I think I nailed the folder naming problem.

1. make a folder named Test (or any other name)
2. make a folder named Test 1 (or same name as above, but with a SPACE and something else behind it, anything)
3. put a 3dm file in the second folder
4. doubleclick this file
5. file not found.
6. remove the space after the first word from the foldername, and it works.

the logic I think is that MoI searches for the path, but first encounters the first path with that name uptil the first space it encounters, and does not find the file there.
I can reproduce it on os 10.8.5 (macbook pro) and 10.10.5 (mac pro)

wim