Just installed update 18 and found I could not run DDO past the sign on screen.
After much mucking around I finally deleted the UserPreference.ini file and everything loaded fine except when I went to set preferences in the game the DX10 & DX11 graphics options were greyed out.
Has anybody else had this problem
P.S. I am running Widows 8 with DX10 & DX11 installed.