Inside pfcagent.mat, the variable saved is not called "saved_agent". It must be called something else.
That is why the first line of code failed to find saved_agent from pfcagent.mat, and the second line of code generates the "Unrecognized..." error.
If you don't remember what variable name is used in pfcagent.mat, try this
listOfVariables = who('-file', 'pfcagent.mat')
