PokerTracker

Using PS, was working fine last night, this morning every one else's hud is coming up fine but mine is only coming up as a black box with nothing in it.
I was using an older version of pt3 but updating to the current version hasn't made a difference.

Can anyone help?

Please enable logging and restart PT3 - play a few hands and then report your problem. Include a screenshot along with your log files so that we can see what is going on.