Sample dataset broken..

I have updated the sample dataset, but for some reason it is broken. What I do to rebuild it, is take the "clean version" with only the necessary files and then run `run_anatomy_tutorial.sh`, `run_meg_tutorial.sh`, `run_meg_volume_tutorial.sh` from mne-scripts with the nightly version of MNE to produce the updated sample data. For some reason, there are 5 inverse operator tests that fail.

One problem I tracked down so far is that MNE C code does allow fixed orientation inverse operators while mne-python doesn't but with this fix included, other inverse tests fails. This is must be somehow related to recent depth-weighting changes. The strange thing is that the tests pass with the old sample dataset.

I have put the data here 

http://www.nmr.mgh.harvard.edu/~mluessi/MNE-sample-data-processed_0.5.tar.gz

if one of you wants to help track down the source of this problem..