Troubleshooting H Bridge Inverter Boost Issues

[Chacabucogod]

I'm building a boost inverter, and when I connect two trasnsistors, an npn and a pnp, to the output resistance, and connect these two transistors to voltage it works. Now, when I connect the other two transistors and connect them to ground the boost stops working. Would anybody know what's going on?

 

[Greg Bernhardt]

Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?