Drag and drop between machines does not work, hangs with beachball

Latest version of Mavs won’t let me drag and drop between machines on the LAN. I have to use right-mouse copy and paste, that works every time. I am using the latest beta of TF. If I relaunch finder (back to apple version) I still can’t drag and drop, but perhaps if I rebooted I could… did not test that. Any help? thx!