Image Processing Toolbox not found despite being installed

I have written a program that requires Image Processing Toolbox. Yesterday I run it after a long time and it said "impixel requires Image Processing Toolbox.". I reinstalled Matlab with Image Processing Toolbox specifically. That solved the issue at that time.

Later yesterday, I encountered the problem again, and after a bunch of restarting the computer and other tries, changing the directory from where I was working from made it work.

Today the same issue arises again. Changing the directory has not made it work. If I go to Add On Manager, it says Image Processing Toolbox is installed.

What can I do to convince Matlab that IPT is in fact installed?

Thank you in advance for your time and your help.

EDIT: When attempting to reinstall MATLAB and the Image Processing Toolbox, an error arised, "Can't find entry point" and now the error when I run the program has changed to "Unrecognized function or variable 'impixel'." even though IPT still appears in the Add-On Manager

[Matt J]

That sounds like an issue for Tech Support.

[Image Analyst]

What do you see when you type ver in the command window? WHat operating system are you using? Do you have your own license or a shared license? I agree with @Matt J - call tech support for free installation help.

Answer 1

[Star Strider]

Run these from a script or your Command Wiindow:

restoredefaultpath

rehash toolboxcache

If that still does not solve tthe problem, Contact Support.