I understand your frustration about the error you getting. The instructions for renaming the configuration folder are in the link that I posted in my first response, I'm putting here again for reference.
The reason I have asked to you do this first is to determine if the error you are getting is due to some sort of file corruption. If it is then this is the way to resolve the problem, if you try these things and the problem persists then a ticket would be required to get some more info and do some more in depth debugging of the problem.
I'm opening a ticket for you on this issue, to update the ticket login and visit your support history. The first thing that I will have you try is to rename the config folder to determine if this is the cause and if it is not we will move on.