P: Generator error "There is a problem with Generator. Please quit Photoshop and try again"

A tough problem. Please post the solution when it's found.

Gone thorough all the permissions with Adobe support. I'll wait for Adobe to come back to me.

The following may only apply to Windows.

If only non-admins receive the generator error, it may be that the permissions on a file or folder are set to admins only or restricted to a named user. Try running Photoshop 2018 as an admin from one of the students logins. 

Type Photoshop in the search box and you should see Photoshop 2018 at the top of the results. Right click on "Adobe Photoshop CC 2018" and select Run as Admin. If you do not see the error, then it is a permissions problem. 

If you really need to run Photoshop 2018 now and not wait until Adobe or someone finds the problematic file / folder there is a (not great) option. Set Photoshop CC 2018 to Run as Admin as a default. To do this login to an Admin Account and find the executable for Photoshop CC 2018. It is likely at C:\Program Files\Adobe\Adobe Photoshop CC 2018. Right Click the exe file and select Properties, Compatibility tab, click 'Change Settings for All Users'. Then click on the Run As Admin checkbox and click OK. See the second screenshot below.  This would need to be done on each machine.

I've spent a few hours with support and didn't get anywhere so they've escalated it.

Folder redirections work fine for admins its only non-admins that receive this generator error in 2018. 2017 works perfectly fine for admins and non-admin students with folder redirections.

Hopefully adobe come back to me, the  call has been logged with them since early June and last update I received was last week about it being escalated. Not happy with the support so far.

i am having the same problem with imac.  above suggestion doesn't apply.  contacted phone support who spent an hour with no resolution.

Here is a link to a thread that may be helpful. It is somewhat long. Near the end it recommends checking and changing the registry because the Documents folder is pointing to a non-existant drive. There may be an alternative to modifying the registry. I have not had this error with my PSE 2018 so can't personally verify this. It's probably worth a try.

Open File Explorer. You should see a Quick Access section in the panel on the left. Documents, Pictures, Video, Downloads, Desktop will lbe listed there. Try clicking Documents, etc. Do you get an error with any of these? If so, right click that named folder in the Quick Access section (it must be the folder in Quick Access). Click properties. In Properties there is a Location tab. Click that. You will see a panel that allows you to move the named document folder to another Location. See https://www.dummies.com/computers/ope...