what is your output for "sh mls nde" ?
1-r#sh mls nde
Netflow Data Export enabled
Exporting flows to 192.168.2.211 (9996)
Exporting flows from 192.168.231.13 (50647)
Layer2 flow creation is disabled
Layer2 flow export is disabled
Include Filter not configured
Exclude Filter not configured
Total Netflow Data Export Packets are:
500140 packets, 0 no packets, 14503920 records
Total Netflow Data Export Send Errors:
IPWRITE_NO_FIB = 0
IPWRITE_ADJ_FAILED = 0
IPWRITE_PROCESS = 0
IPWRITE_ENQUEUE_FAILED = 0
IPWRITE_IPC_FAILED = 0
IPWRITE_OUTPUT_FAILED = 0
IPWRITE_MTU_FAILED = 0
IPWRITE_ENCAPFIX_FAILED = 0
Netflow Aggregation Disabled
are you using 9996 at your collector or using 2055? mine uses 2055 not 9996.
that's the first thing i see here. your version's seem to match.
also, one other thing is it does not show is any nde collectors in your output (i think that is, mls nde interface).