OK, I found a couple of problems, but first... I was able to generate the Deep Architecture message once. It didn't seem to have anything to do with how many notes I was playing; it just happened. Now... what I'm going to suggest may seem like total voodoo, but here's what I did to get the messages to stop and get your song to play (and record) OK. 1) Set your song length to 273 measures (it's currently at 500-something). Change this in the transport 2) Go to a track that has automation on it. Open the *automation event list*. Once that's open, hit CMD-1 to expose the Automation Arrange Page (normally hidden). CMD-A (select all) and then use the function "set optimal region sizes rounded by bar". Still in the Automation Arrange Page, do a "select unused" and hit delete. Then do a "delete unused tracks". Close that window. You should now be back on your main Arrange page. 3) Environment, Clicks & Ports layer: drag the cable from the SUM output of the Physical Input back to the Physical Input. Now drag a cable from SUM to the Sequencer input and try recording some new tracks without your arpeggiator stuff in the loop. If everything's working well then you can re-connect your arpeggiator stuff and it should work fine.

Wow Okay ill try that tonight when i get home from work. Thanks a bunch.. What can i do to further avoid this message ?

You're welcome. What can you do to avoid it? Impossible to say. This message is undocumented and I've been trying to get an answer for years without luck.