Simple h-bridge problem

Here is the simulation with the left hand side active and 1k resistors for the PNP bases. I've used a 470R resistor to simulate the load. Currents in the pA and fA range you can ignore. Only the mA is significant. I don't have models for your transistors so I have used general purpose ones.
It looks OK:

EDIT

Here is the LTspice model incase someone want to play with it:
H-Bridge-Full-Transistor_V0_02.zip (807 Bytes)

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