Calling Mathematica gives 'Read-only file system'

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When I try to call Mathematica for anything (mathematica('1')), it comes back with

OSError:  [Errno 30]  Read-only file system: '/export/pkgs/linux-rh6/sagemath-6.3/local/share/sage/ext/mathematica'

Is there anything I can do to remedy this?

Calling math from the command line will open Mathematica.