2005 Dodge Magnum

I just got done installing a Scytek 777 in a 2005 Dodge Magnum.  I tested the unit and everything was working fine.  I attempted to start the vehicle and the starter engaged, it started, revved kinda high and shut off.  I started it again with the same result.  I tried for the third time and this time the starter would not engage.  The key would turn on, but not starter.  I suspect the factory anti-theft system is the problem.  Has anybody else had this problem? Any ideas on how to reset the factory alarm?

Thanks,

Ki