The Matlab cache seems to have a problem. What do I do?
If switching between Solaris and Linux versions, your Matlab cache can get confused between architectures. If you get an incomprehensible error, to clear the cache: Under File -> Preferences… Select the General node and click on “Update Toolbox Path Cache” (Under Windows the cache is stored in a completely different place, so that should not interfere with also running under *nix.