I am having the reverse problem! when i do as described above, ....
using art atmail clients were complaining that randoml emails were being opened that show totally blank. When i googled how to fix this, the general consensus was to roll back to the original plesk version.
however, when i did this ... the original plesk atmail gives the " no password" error.
Upgrading to the current art version again fixes this yes... ,,, but then i have the blank email problem again...
im now in between a rock and a hard place....
any suggestions gratefully received
Hey Will. . .
What do you server logs show??
Did you check the logs to see what error message is being given when the e-mail shows up blank??
Try checking: /usr/local/psa/var/log/maillog
Let me know what it shows.
Actually that's the mail log, you might want to check /var/log/messages
Get back to me when you can, and I'll try to help you out!