Hello Folks, just for your information. The rsync package in Ubuntu 22.04 LTS was updated from 3.2.3 to 3.2.7. This triggers the known and still fixed rsync-incompatibility bug [1] in Back In Time because BIT in Ubuntu 22.04 LTS still is quit old and not able to handle the "new argument protection" introduced with rsync 3.2.4. It seems that rsync itself doesn't follow Semantic Versioning. It was a big change of behavior and should have been a minor update (Version number 3.3 instead of 3.2.4). On the other site the Ubuntu folks should have read the changelog more carefully. At the end currently BIT is "broken" [2] in Ubuntu 22.04. The solution is to use BIT from upstream repo or PPA. Or using the workaround described in the bug [1]. I opened a question about update policy at Ubuntu rsync [3] and also informed the rsync upstream maintainer about the situation. Kind Christian [1] -- <https://github.com/bit-team/backintime/issues/1247> [2] -- <https://bugs.launchpad.net/ubuntu/+source/rsync/+bug/2009756> [3] -- <https://answers.launchpad.net/ubuntu/+source/rsync/+question/705772>