vCenter upgrade / migration fails with error "error in populating profiles"

Hi,

Setup details :

Current setup :

vCenter 5.5 U3 Embedded SSO

Database - Microsoft SQL 2008 R2 (External DB)

Issue :

Tried Migrating vCenter 5.5 U3 Embedded SSO to VCSA 6.0 U3 Appliance using migration utility and got an error "Error in populating profiles" in Step-5 "Select Appliance Size"

Also referred the below articles which didnt help much.

"Error in populating profiles" @ vcs 5.5 U2 (Windows) to VCSA 6.0 U2M migration

VMware Knowledge Base

Please let me know if any one came across such issues.