After using R(D)COM and Matlab R-link for a while, I do not recommend it. The COM interface has trouble parsing many commands and it is difficult to debug the code. I recommend using a system command from Matlab as described in the <a href="http://rwiki.sciviews.org/doku.php?id=tips:callingr:matlab">R Wiki</a>. This also avoids having to install RAndFriends.
This is giving me problems with R2014b. I get the following error:
Error using axes
Handles of type Legend cannot be made the current Axes.
Error in suplabel (line 87)
for k=1:length(currax), axes(currax(k));end % restore all other axes
I think it has something to do with this: