I did a quick grep for that phrase. All uses seem to be on the demo playback page, where it is used as the title for errors on that page.
https://hg.hedgewars.org/hedgewars/file/tip/QTfrontend/ui/page/pageplayrecord.cpp

So I guess the idea is that that page is titled "Record Play", and if there is an error in renaming/deleting that's the title to use.

Thanks!

Another question: What does "PAotH" mean and is it translatable?

Also, is "Hogera" translatable? I know "Hog Solo" is not.

Names can and should be translated if it makes sense in your language. But it's equally valid to just copy the name verbatim if it would make sense. Don't be afraid to be creative.

Just don't forget to be consistent everywhere.

“Hog Solo” is a hedgehog name. “Hogera” is the name of the planet of the hedgehogs in A Space Adventure. Feel free to copy those names or use a different name in your language. It's OK.

In the German translation, I used “Hogera” for “Hogera” and “Igel Einsam” for “Hog Solo”.

I think the string in question (“Record Play—Error”) is too confusing and inappropriate anyway. I have changed this to simply “Error”.

I have also added some context comments for a few strings which are not self-explanatory.

These changes are not visible in the translation files yet, but they will be when we announce a string freeze.

Please keep in mind that all translations made before a string freeze are subject to getting outdated.

Thanks!

One more question: "toggle team bars" - is this for 1 team or many teams?

All teams - shows/hides that part of the GUI in case it is obstructing your play.