Previously accessible file is now inaccessible.

I want to test my installation after installing gurobi5, when I run initCobraToolbox, the error came up >> "Previously accessible file "C:\Program Files\MATLAB\R2013a\toolbox\cobra\external\addpath_recurse.m" is now inaccessible"

[per isakson]

Could it be that addpath_recurse.m isn't in the search path of Matlab, because the current directory has been changed?

[joha]

yes, i had change the current directory. How i want to run the initCobraToolbox back? C:\Program Files\MATLAB\R2013a\toolbox\installed\cobra\initCobraToolbox

I had installed a new gurobi 6.5.1, after i run it, i type the savepath command, and it will automatically change the new version, but in the initCobraToolbox, still the old version of gurobi5 and when i tried to edit the initCobraToolbox, the access denied.

help me.

Answer 1

[per isakson]

• The "installation programs" of Matlab toolboxes (The MathWorks excluded) varies. You have to follow the specific instructions - if there are any ;-( &nbsp Installation of many toolboxes consists of two simple steps. Copy a bunch of m-files to a folder and add that folder to the path (and save the path).
• I don't know anything specific about the installation procedures of these two toolboxes.
• "type the savepath command" &nbsp has effect only if folders have been added by the "installation program" (your question hints that at least one required folder had not been added).
• There is a little tool called Set Path. However, first see: What Is the MATLAB Search Path?. Use Set&nbspPath to find out whether the folders of the two toolboxes are in the path. Add folders if needed and remove the folder(s) of the old version of gurobi5 (hopefully the versions are in different folders). Test the functions and if it works save the path.

[sarathjc]

thank you so much.It solved my problem