Please fix the deinstallation routine in your next Beta in order not to leave any trace of v11 in the registry and to leave the v10 settings UNTOUCHED!!
Now not even the statistic function is working properly. It does only show the values of one (and always the same) brain even when this one is not open.
See screenshot attached. The brain "polyhistor..." is not open but - when invoking this other brain (dell-recordings) and opening its statistics only those of the already closed polyhistor ... come up.
I do know (even for decades) that beta testing can always be a cumbersome and even "dangerous" process, but not to the extent that a working installation (of a previous release) which was explicitely left untouched during the testing ends up being damaged.