Conrad,
I just updated the server to 2.6. Now, when trying to login, I get an error that says: "Address Book Error. Invalid username or password." But, oddly enough, I AM logged in. I can see the sites on the server and I can attach to them. The main viewer window says "Sign in" in the upper right hand corner and it does NOT indicate that I am signed in as before. BTW, everything on the public servers looks and works fine.
Also, attempting to use the 2.5 viewer now crashes when trying to log in to the 2.6 server. I get the following error and then it goes into an infinite attempt to login and just sits there. I have the rest of the error report if you need it.
Error report - Remote Utilities Viewer
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Class: Exception
Text: RSA decoding error: Invalid block type.
Version: 65005 (0)
Id: {5A4625B0-7C4F-45A7-8A23-9D05C5B7D6AD}
Date: 28-03-2017 08-52-28
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Thanks,
John