cftool is not loading in Matlab R2014b

When I am trying to load cftool, I am getting this error.. pls. help

>> cftool Error using cftool (line 148) Undefined variable "sftoolgui" or class "sftoolgui.sftool".

Answer 1

[Mukul Rao]

Hello,

Based on the error message, I believe this issue might stem from two reasons:

• Your MATLAB Path is bad

For some reason, the curve fitting toolbox could have been removed from your MATLAB Path. Try the following steps

>> restoredefaultpath
>> rehash toolboxcache

%If this resolves the issue

>> savepath

• You do not have license for the Curve Fitting Toolbox

Please perform a license test for the Curve Fitting Toolbox with the following command

license('test','Curve_Fitting_Toolbox')

If you are license to use the Curve Fitting Toolbox, the output of this command should be 1.