GNU Octave, version 4.0.0
Copyright (C) 2015 John W. Eaton and others.
This is free software; see the source code for copying conditions.
There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.

Octave was configured for "i686-w64-mingw32".

Additional information about Octave is available at http://www.octave.org.

Please contribute if you find this software useful.
For more information, visit http://www.octave.org/get-involved.html

Read http://www.octave.org/bugs.html to learn how to submit bug reports.
For information about changes from previous versions, type 'news'.

>> addpath('C:\Users\slyth_000\Downloads\Software\octave-packages')
>> pkg install -forge optim-1.5.0.tar.gz
error: cellfun: C must be a cell array
error: called from
    get_forge_pkg at line 72 column 14
    get_forge_download at line 26 column 12
    pkg at line 393 column 29
>> addpath('C:\Users\slyth_000\Downloads\Software\octave-packages\optim-1.5.0\optim-1.5.0')
>> pkg install -forge optim-1.5.0
error: cellfun: C must be a cell array
error: called from
    get_forge_pkg at line 72 column 14
    get_forge_download at line 26 column 12
    pkg at line 393 column 29
>>