Search path with bpatcher in M4L device

I have a M4L device where i use another patch in a bpatcher. This seemed to work fine, but when i duplicated that bpatcher i got the error that the subpatch in there couldnt be loaded. Also, when setting the patch for the bpatcher i get the warning that it isnt in the search path.

Aren't files in the same folder as the device automatically in it searchpath? I am using a js-file in the device as well, located in the same folder as well, and that one works fine.