May I offer a suggestion:
1 - before updating, disable all extensions.
2 - update the core (TastyIgniter).
3 - navigate to your extensions list and remove all the extensions that are showing as Unknown.
4 - install the extensions from the Updates / Browse Extensions button (all the white colored extensions are not installed, click on them to install them).
5 - navigate to Design / Themes and delete any themes that are not showing a good thumbnail
6 - install the latest Orange Theme from the Browse more themes button.
7 - report back here how that worked.