The TISImaq_R2013.dll must be registered manually in Matlab.
Enter:
imaqregister("{app}\win32\TISImaq_R2013.dll
or:
imaqregister("{app}\x64\TISImaq_R2013.dll
where {app} is the installation directory.
The default installation directory is:
c:\Program Files\TIS IMAQ for MATLAB R2013b
The register call for this is:
Matlab 32 bit:
imaqregister("c:\Program Files\TIS IMAQ for MATLAB R2013b\win32\TISImaq_R2013.dll)
Matlab 64 bit:
("c:\Program Files\TIS IMAQ for MATLAB R2013bx64\TISImaq_R2013.dll)
Register of the plugin can be done also through the menu in the IMAQ Toolbox of matlab.