Depending on which AOS switches and brand of SFP's being used, you may need to try a few different settings to get the SFP to come up when used with the new ASE switches.
For a 1531 connect to a 1560 the following worked perfectly.
ASE Switch 1560:
!
interface 10GigabitEthernet 1/2
switchport mode trunk
speed 1000
description downlink to 1550 xgig 0/4
!
AOS switch 1550
!
interface xgigabit-switchport 0/4
description Link to 1560 1/2
no shutdown
switchport mode trunk
speed 1000 nonegotiate
!