Edit 2: A new version has been pushed with the fix: https://github.com/itchio/butler/releases/tag/v15.26.1
Thanks for the heads-up, were you on the mainline release or the development release previously?
Edit: I found the issue, it was due to a change in our CI deploys. The next version of butler will have the correct version baked in.
A slight issue though, it may switch you to the development “head” channel since you likely went from a mainline release (which mistakenly thought it was a development build) that then suggested an auto update on the development branch. That means future updates will likely also pull from development.
The development branch is generally stable, it’s used to deploy to the kitch app, but I recommend redownloading the main version after this if you’d like to ensure you’re on the mainline release again.