I just opened your website collection (its looking really nice, BTW) and I could access the items list without any issues, can you give it a try again? If the error persists, could you send us your console errors?
One guess is that after the update, your browser might have retained in the memory old scripts. We have recently done updates to the loading strategy which may cause this effect. I would try reloading the page with CTRL+SHIFT+R to make sure the cache is clear. Server-side cache also affects this, if you have any plugin installed…
THAT was it. Browser caching… Tried it as you said and it works !!
THANKS and sorry for the false alarm
A
Ps. I will update when the project is near completion and has some material in it. Its going to be epic.