Hi,
Sorry for the issues you are having.
I took a look at the system information and it appears you are using a Release Candidate Version or you downloaded you copy of the plugins right at the upgrade and that version had the incorrect number in there.
Can you please update both the Events Calendar and the Events Calendar Pro with brand new copies and see if that fixes the issue.
You can get the latest copy of Pro from your account here.
Let me know if that helps the issue.
Thanks