Hello, I have a concrete 5.4.2 sitehttp://www.rctankhq.com which I updated to 5.4.2.1 Unfortunately there were many problems so I reverted to 5.4.2 but the problems didn't go away. If I create a new block it kicks me out of edit mode. If I try to edit a block it gives me an error when I enter 'apply'.

I have another small site that had the same problem. I deleted it and re-installed but I still get the same problem, it won't even let me select the page type I want. I have deleted the installation and re-installed a few times with the same problem happening. So this route would not seem to be a solution for myhttp://www.rctankhq.com site which will be tons of work if I went that route anyway.

I've cleared my browser and site cache.

I hope from what I have written will give some clues to someone who might be able to assist with this. I just knew I was tempting fate, upgrading, when everything was working fine, silly me.

BTW I have installed via my Bluehost control panel.

Thanks in advance for any help
Nev