Hi there, I have an application written in mod_managed that receives a call, originates a call and then bridges the call when the user answers. This app will be extended to call several recipients and offer several chooses when a user answers (so I can not use the stock group_confirm functionality) I am load testing my application with SIPP. At a low cps the application reports no errors. As I increase the call rate I see: [ERR] switch_cpp:910 object is not initalized error message reported by FS. Line 910 seems to coorolate to a Session.Ready() request. To avoid accessing sessions that no longer exist I set my managed session = null in the hanguphook. I am a bit worried by this, because I am thinking this is indicative of a threading issue - i.e. I am not talking to the session I think I am tallking to. Is the Managed session thread safe? Are there any common gotchas? Also should I worry too much about this "object is not initalized" error? Will they cause an issue. On the plus side I can pump 80,000 calls at 5-10 cps through this system with no hung/orphaned channels - so that makes me think the system is ok. Its just those pesky error reports :) Any insight would be welcome. Thanks Phil