Now I find out a solution for Import Error. When I gzip my own core.gz I'd add some libraries (libgobject etc) needed for my app. As I understand, this libraries conflicts with pygobjects. Now I start my app in native core.gz and all is OK. bluetoothd is running and simple-agent work fine.
But, unfortunately, I still can't work with BT serial device. If compare with ubuntu where all work OK, I've noticed a difference.
In ubuntu after "sudo rfcomm bind /dev/rfcomm0 11:22:33:44:55:66" I get the PIN request. After input correct pin, I start my app and connect with my device. In TCL I haven't to get request for PIN. Instead of this I get message "Connection refused" after pause. Maybe somebody knows correct syntax for setup BT serial (rfcomm) with implicit PIN enter or name of missed extension for PIN request?