Did you call savemultfigs a second time? Or do you have this error systematically? There is a bug I haven't solved yet that gives this error when savemultfigs is called a second time while the other savemultfigs is still open.
If that's the case, the solution for now is simply to close the gui and relaunch savemultfigs.
Thanks for the comments! I will try to solve this bug and incorporate other useful comments.
Thanks, very useful. Strangely I get very different results on Matlab 2011b and 2013b with the same data. On the recent version, the density distribution is more smooth and has a stronger tendency to not go to 0 at the ends of the distribution. I'm guessing this is due to changes in a Matlab function. Any ideas?