"symbol lookup error" on Linux

Just compiled the latest version of UE4 on Linux using the instructions given here, but when I try to run it I get the following error.

./UE4Editor: symbol lookup error: /home/blueblur112198/tmp/unrealengine/Engine/Binaries/Linux/libUE4Editor-Kismet.so: undefined symbol: _ZN26FGraphEditorDragDropAction9ConstructEv

Whoops. accidentally posted this twice. Sorry about that…

Did you find a solution to this problem? I have the same problem here.

Do a clean rebuild.