I have problems completing a MATLAB installation.

I downloaded the installation files from mathworks.com and I ran the installation as root, so far so good. The problem is that I am unable to install the "MATLAB - Scientific computing environment" from the software center. When I try to do the installation I get the error message "No MATLAB executables were found in the directories you specified. This package requires at least one local installation of MATLAB."

I thought that the problem would be solved by creating a matlab link under usr/local/bin. This enabled opening matlab independent of location, but I can still not install "MATLAB - Scientific computing environment".