SIFT pgm image problem

Hello sir, I want use SIFT tool for comparing 2 images. I have downloaded the code from our mathwork site. But the problem is when I run the code the dialog box appears which says "program to detect invariant keypoints in PGM images has stopped working". Can you please suggest me a solution. Its my collage project. Thank you

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John D'Errico
John D'Errico on 23 Apr 2016
Edited: John D'Errico on 23 Apr 2016
Where did you download it from? There are MANY submissions on MATLAB CENTRAL that do SIFT. Please show a link.
https://in.mathworks.com/matlabcentral/fileexchange/50319-sift-feature-extreaction?s_tid=answers_rc2-2_p5
This is the link sir.
Please sir can you help me in this matter, I need find SIFT for my project.

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on 23 Apr 2016

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on 16 May 2016

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