The installation has a memory limit of 10 MB.
To remove this limit, you will need to enter a registration key,
which is for free for non-commercial users.
Commercial users should contact SciFace software or their local distributor.
http://www.mupad.org/muptan.html
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Fixed single-user licenses for the following versions of MuPAD
are available free of charge:
http://research.mupad.de/licenses.html