Your local repository is in a format incompatible with the remote repository that bzr is trying to stack on.
The "different rich-root support" is the key part of that error. Your local repository is 1.9-rich-root, but the remote repo is not rich-root (just pack-0.92, I think).
Probably bzr should provide a way to do a push without stacking to avoid this. Perhaps you can specify a different --stacked-on branch that will avoid this.
Your local repository is in a format incompatible with the remote repository that bzr is trying to stack on.
The "different rich-root support" is the key part of that error. Your local repository is 1.9-rich-root, but the remote repo is not rich-root (just pack-0.92, I think).
Probably bzr should provide a way to do a push without stacking to avoid this. Perhaps you can specify a different --stacked-on branch that will avoid this.