Using CTA 3 Pipeline, I created an animated gif which only animates 1 time after exporting.
Regardless of which program I use to play the file, it will only animate 1 time. I clicked on the "Loop" feature but it will not loop.
Any ideas?

Often, it helps to simply remove the last frame and to save it again.

E.g. with Virtualdub:
1. Use the marks to select the last frame and then cut it:


2. Export as "Animated GIF":


3. and activate the "Infinite loop":

Done !
Now it should (hopefully) loop.
Good luck !

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Thank you. I will give it a try!