Replacing receptacles protected by one GFCI outlet
Trouble shooting is about isolation of a problem. With that in mind and using safe procedures (never try and connect or disconnect while the breaker is on) you need to start at the GFCI and work your way down.

First disconnect all of the replaced receptacles and check the GFCI. This may be a rare occasion were the GFCI went bad. If it does work then connect each receptacle down stream until the GFCI trips and will not reset. Now we have an isolated problem and we need to figure out what is wrong with that particular device. 

Once we have identified that problem proceed right on down the line one at a time until the circuit is complete and in working order.

I know this doesn't give you an exact answer to your problem but you can now narrow down the problem(s) and if the problem is not obvious then stack exchange can give you a more specific answer to your problem.

Hope this helps.