Neither vanilla or BDSaleM clients let me get past the initial splash screen, which disappears after a few seconds leaving blank screen.
The Enders client lets me log in, but both I and any objects seem to be rendered underground - please see attached screenshot. You can see my character and the leaves from a tree in the texture that should show rock face.
Have uninstalled Java, deleted cache files and reinstalled both win32 and 64 bit versions of both Java versions 6 and 7, but still no fix.
Any suggestions?