This problem also happens to me on 888 poker. It is difficult to replicate on 1 table, since it occurs when I play multiple tables.
Most of the time I open 4 SNGs at the same time and then 'Tile' them. It sometimes takes me about 6 to 7 times to restart the HUD to get it right.
I have this problem every 4 table session.
P.s. Thanks for the great PT4! I used similar software sometimes, but will certainly buy PT4 when it's out