No Tools in Toolbar
I'm also getting this error:
An unexpected error occurred.
Allowed memory size of 94371840 bytes exhausted (tried to allocate 16384 bytes)
enable Show the debug error output
Save, and then try again. You should get a more informative error output which will tell you what's causing the problem.
It may also be a huge image which is too big for the image processing routines to handle. 94371840 bytes is only 90 megabytes, which is not really very much. If you can, set you memory_limit in php.ini or .user.ini to 256MB. You can also check what memory_limit is set to by going to dashboard, system/settings Environment information. If it's less than 256MB you're probably going to struggle.
Sorry if this is a stupid question, but how do I fix this? In other words, where would I find php.ini or .user.ini?
memory_limit = 256M
You could also upload a php file, e.g. phpinfo.php containing this
<?php phpinfo(); ?>
and then access it in your browser. Amongst the information it reveals, it should show you which configuration files are in use.
Remember .user.ini has a dot at the beginning,
I figured it out that the file is called phprc and is located in the PHP version # folder. (I'm on Dreamhost if that means anything.)
Oddly, the update initially applied to one site but not to the other, even though they both use the same phprc file. The memory limit error (and missing tools in toolbar) continued to display only on the home page of the site that did NOT update.
After a few minutes, angels sang and suddenly the home page refreshed with (1) no error message, (2) all available tools, and (3) interestingly enough, the page content I'd forgotten was there suddenly reappeared. I went back to the dashboard and verified that, sure enough, the memory_limit now shows 256M. Hurray hurray hurray hurray!
Thank you thank you thank you thank you thank you !!!!!
Glad you got it sorted - Sounds like I could have saved you a *lot* of time ;)