We have had real problems with our newly migrated panama accounts this week. We were only able to navigate around the site for a maximum of 20 minutes before it would completely freeze up. Then when the account was frozen, we were unable to access anything within the Panama interface.
Speaking to Yahoo, they suggested that it may be problems with IE7 or Firefox, or even our internet connection. This confused us somewhat.
After about 3 hours of pulling our hair out (I am nearly bald now – used to have very long hair!) we found that it was a problem with the Panama login that we had initially bookmarked. When upgrading each account to Panama, you are taken directly to the new Panama login screen which asks you to bookmark it. As I took little notice of the login, I did not notice the length of the URL which was a lengthy dynamic url with many parameters. We then decided to try a version of the URL without the dynamic part:
And…Bob’s your uncle! We had access to our accounts again! Thank God!
So, If anyone is having System Error with a newly migrated Panama account I would recommend re-bookmarking the login above, and then re-logging in. You may well find this is the answer to all your problems!