Help - Compare Mode Not Working on Timeline

I’ve run into an issue where I’m unable to access the Compare Mode settings (difference, horizontal split, etc.) The keyboard shortcut doesn’t work, and neither does the dropdown menu.

I tested the issue and the compare mode seems works on other projects, but not this specific shared project. Another Flame artist at my shop was able to access these modes, so it seems localized on my user on this specific project.

I’ve restarted flame, reset my keyboard shortcuts, and nothing has seemed to work.

Anyone experienced a similar issue?

Only when I don’t have any tracks selected as secondary.

Sometimes I’ll switch the compare source over to a grabbed reference and then forget to change it back to secondary track when I switch to a project with nothing in the reference buffer. maybe check this drop down if the issue is on the timeline:

sometimes i’ll make a batch group by selecting a shot in the timeline and use the ‘create batch group’ command from the pen+click drop down menu. This has the somewhat annoying side effect of creating a new video layer with ONLY that shot and forcing your primary to it. Possible this has happened?

like @ytf says - check where you’ve set your primary and secondary…

Solved, looks like resetting the Flame User settings fixed this.

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Just wanted to write here that I happened to have this same issue today. I have a handy copy of my user lying around and I imported it in and my compare mode issue was fixed. Would be interesting to know what causes it but for now, thanks for writing this and hope we can get to the bottom of it one day!

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Happened in 2025.2.0.2 - deleted settings in /home/flame which fixed it - thanks for the tip