[Pharo-users] saving a pharo 20619 image that has my code and RFB server causes 100% cpu utilization

If I choose 'save' or 'save as' the image locks up. It only happens with my code and the RFB server loaded. In a pharo 2 + rfb image things work fine. In a pharo 2 + my code image things work fine. 'Save and quit' then re-opening the image works fine. What can I do to diagnose what is happening? Thanks Paul