Using a Trade, Energy or Fluid-O-Mat with a Personal Safe allows it to read what is in the inventory stock wise, so it can pull it out when it is sold. It does not however put the payment in, so it is voided. I tested to see if they were just generally broken, but they work fine with normal chests.

ok, i know why it is happening. It is because of the IInventorySupport that IC2 Classic has now.
As said: fixing when i am back.

Fixed. Dirty but it is fixed...