Modifying the path marking session file in Matlab

I created my own tagging session file in matlab (using the tutorial image labeling application) which conflicts with the original images of my database. I copied and pasted this file and installed the data on another computer, but I cannot open it because the images path has changed.

The error message given is: "attempting to reference a non-structural array field"

Is there a way to change the path of the used images loaded in the file to the current position?

Thank,