MATLAB: Can’t declare symbolic variables

qtwebkit.frameworksymbolic variables

Mac OSX 10.8.2 When I try:
>> syms x y
I get the following error:
Invalid MEX-file
'/Applications/MATLAB_R2012b.app/toolbox/symbolic/symbolic/mupadmex.mexmaci64':
dlopen(/Applications/MATLAB_R2012b.app/toolbox/symbolic/symbolic/mupadmex.mexmaci64, 1):
Library not loaded: QtWebKit.framework/Versions/4/QtWebKit
  Referenced from:
  /Applications/MATLAB_R2012b.app/toolbox/symbolic/symbolic/mupadmex.mexmaci64
  Reason: no suitable image found.  Did find:
  /Applications/MATLAB_R2012b.app/bin/maci64/QtWebKit.framework/Versions/4/QtWebKit:
        truncated mach-o error: segment __LINKEDIT extends to 31858872 which is past end
        of file 31858711
Error in /Applications/MATLAB_R2012b.app/toolbox/symbolic/symbolic/symengine.p>symengine
(line 26)
Error in sym (line 106)
        [~] = symengine;
Error in syms (line 66)
        assignin('caller',x,sym(x));
How can I fix this?

Best Answer

A similar report I find about that error message for QtWebKit turned out to be due to the toolkit binary having been improperly copied to the Mac from a remote system.
I suggest trying re-installing. No promises.
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