The following message started showing up in DISE since yesterday:
SSL_connect failed with error -208: error state on socket
First off, I'm sorry for the trouble. I didn't foresee that DISE would get this problem.
I bought and installed a new, more secure SSL certificate for my websites. The reason was that users of Google Chrome stopped being able to load my websites using secure connections. Unfortunately, this means that DISE now doesn't trust the new certificate, because it trusts only the CA (Certificate Authority) I used previously, which was StartCom. With the new CA being Comodo, I'll need to update the certificate in DISE in a future update.
This is related to automatic updates, so if you don't wish to see the error, the only suggestion I have right now is to disable automatic updates within DISE. You can still download DISE from the website and install the new version over the old one.
How to disable automatic updates (and get rid of the error)
Go to the main menu, then Tools > Preferences
Under General > Notifications, untick "When update was found".