I have been through the forum and can't find an answer to this.

Since upgrading to version 5.4.10 I can no longer use the add block or add to sidebar functions. Instead of the popout box appearing to allow me to add a block or select from scrapbook, I just get a kind of grey blobbed image. IE the text is not appearing.

I can edit anything that already exists, but there's no way to add anything new.

I ran the site in development mode and got a fatal error in a php file in /concrete/models/block_types.php on line 401 which refers to the packages folder.

I have checked very carefully and there is nothing missing at all from this folder. I restored a backup to be sure, but to no avail.

I am using a variation of the green salad theme which has my css attached, but otherwise nothing clever is going on here.

I have seen other people have similar issues with 5.4.10 but no answers.

Am I really going to have to start from scratch to fix this?