Hi All,
I have been having issues as well.
Here is what I have experienced and the answers I have found.
1) Error logging into the dashboard after upgrade.
This has been solved by deactivating the User Overview Addon. While I get an error on the dashboard, you can go elsewhere in the system successfully, so just go to plugins and deactivate it.
2) The message asking to accept the intellectual property rights declaration comes in two varieties. Black writing and Red writing. Problem is that on some of my sites the accept button works and some sites it does not work and I cannot get rid of the declaration.
3) In addition to item 2 above, I am also receiving what appears to be a SlimStat 9 year Happy Birthday message that will not go away and there is no way to make it go away.
4) In the settings, if I click on the Addons tab, I also receive an error that results in a 500 server error.
5) I do not see any new visitors to any of the sites now.
If you need a good test bed of a variety of sites with different themes and plugins, let me know. I have 22 of them going and slimstat is acting differently depending on which site you look at.
Thanks,
Tom