2000 323i bmw

Hey guys  i recently did a remote start an keyless entry on this car with viper 5101 ,the customer is telling me that whenever he locks an unlocks the car with the viper remote the car wont start with the key.I used a spare key in a box to remote start,any ideas?  .................................thanks

thanks for your reply guys,i picked up lock an unlock behind the glove box from the middle plug,and yes i did the 556uw with the euro style wiring,and the customer made a spare key BUT NOT GREY it was black,im gonna try to extend the lock pulse and see what happens,and since i got the lock and unlock wires behind the glove box is that ok?.......................thanks