Cosimulation issue Matalb2013b & Modelsim 6.5c

Having revcently upgraded to Matlab2013b, I have found the following issue when attempting to co-simulate using Modelsim6.5c:

Modelsim error: # Loading C:/Program Files/MATLAB/R2013b/toolbox/edalink/extensions/modelsim/windows32/liblfmhdls_gcc421vc9.dll # Error: (vsim-3193) Load of "C:/Program Files/MATLAB/R2013b/toolbox/edalink/extensions/modelsim/windows32/liblfmhdls_gcc421vc9.dll" failed: DLL dependent library not found. # Warning: (vsim-FLI-3160) Failed to load FLI object file "C:/Program Files/MATLAB/R2013b/toolbox/edalink/extensions/modelsim/windows32/liblfmhdls_gcc421vc9.dll".

Is this a Modelsim version issue, 6.5c cosimulation worked fine with the previous Matlab revision (2012b)?

I have also tried one of your cosimulation examples, and I get the same error message.