problems with daqscope

I try to run daqscope, but get the following error message: >> daqscope

??? Error using ==> privateGetAdaptor at 68 The specified super-class 'internal.SetGetRenderer' contains a parse error or cannot be found on MATLAB's search path, possibly shadowed by another file with the same name.

Error in ==> daqgate at 23 [varargout{1:nout}] = feval(varargin{:});

Error in ==> daqscope>localInitFig at 1094 [adaptorStr, ai, names] = daqgate('privateGetAdaptor', 'analoginput');

Error in ==> daqscope at 69 data = localInitFig;

How do I add or change the path so Matlab can find this super-class 'internal.SetGetRenderer'??