imellipse -- "Operation terminated by user" error

I've been having strange problems with imellipse. I'm trying to run it in a loop to draw multiple ROIs but it either breaks out of the loop (with no error message), or gives me the following error, which makes little sense to me.

Operation terminated by user during uiwait (line 82)

In imroi>manageROIWaitMode (line 391)
uiwait(h_fig);

In imroi/wait (line 226)
                accepted_pos = manageROIWaitMode(obj);

In imellipse/wait (line 118)
            pos = wait@imroi(obj);

I distilled my code down to a very simple program, which still has this error (or does not complete the loops):

clc; close all
figure, imshow('pout.tif');
reps = 10;
positions = cell(1,reps);
for i = 1:reps    
    disp(i)
    h = imellipse;
    positions{i} = wait(h);
    pause(0.5)
end

Appreciate your help.

[Gerald]

I've tried this same code on 3 different machines (2012a, 2011b, 2011b), and it works on none of them. The strange thing is that this is not new code -- my imellipse code used to work, but then this problem mysteriously appeared.

[Anand]

I tried this code in 13a. When the image appears, I drag an ellipse and when I'm done I double-click on the ellipse so that I can create another ellipse.

I didn't run into any errors.

Please clarify your workflow.

[Gerald]

Hi Anand, Thanks for your prompt response. I don't know what you mean by "clarify your workflow." On all of my computers, I start up MATLAB, run this code, and try draw ellipses as you did (and double-clicking on them). However, for me, it always just breaks out of the loop or causes an error after the first ellipse.

Do you have any ideas as to what may cause this?

[Image Analyst]

Gerald, did you double-click inside the ellipse, or right click and say "Create mask"? What exactly did you do to "finish off" the ellipse and move on to the next one?

Answer 1

[Gerald]

I think I found the culprit -- I recently installed a third-party application (which looks for mouse behavior in the background) that may have been responsible.

[Xiaolong]

the same problem I met. What's the name of this * third-party application *