OK, that’s not cool… This looks similar to issues we had earlier, due to incompatibilities with Eigen 3.3. But these have been resolved for some time, and should no longer happen with any recent version of MRtrix3. So let’s rule that out first: what does this report:
mrview -version
You’d need version 3.0_RC1 or later to ensure that’s not the issue. If you’re running an old version, try updating first, see if that fixes the issue:
git checkout master
git pull
./configure
./build
Otherwise, I suspect the crash happens in the image loading backend, so you’d see it with a simple
mrinfo data.mif
If that doesn’t crash, try
mrstats data.mif
If one of the above crashes, that would already give us a pretty good idea where the problem might be…