fwiw the "dciijtglt" portion of the folder name is an encrypted version of your login id. If you have more than 1 account, you will have multiple folders that need to be backed up
The disappearing page thing just happened to me, too. Restored from a backup file...but then for awhile I was not able to open my account window, and no positions were showing on the trade page! I downgraded to 817. It occurs to me (IB...if you are reading this) that just today I had made some changes to my layout; something I rarely do. Did any of you guys who lost pages just make some change to layout before closing TWS last time? Maybe there is a connection. I would suggest that you all stay away from Build 818; and if you already have it installed, I would downgrade to 817 until this gets corrected. saxon