Hi Francis, here's a list of items that have changed in 0.8.9 since you last synced that may need changes for the Mac port. 1) Removal of 'blitting optimisation' menu option and the code behind it. - http://home.marutan.net/hg/rpcemu/rev/a37d972fd942 2) Removal of the 'alternative blitting mode' menu option and making that option the default (due to it's requirement on win and working well on linux) - http://home.marutan.net/hg/rpcemu/rev/c30e25e39b31 The code for non-alternative blitting mode remains in the code and is still configurable via rpc.cfg until we're sure the 'alternative' works everywhere. 3) 'Reduce CPU usage', this is what the Jeffrey Lee portable module got morphed into, it's hopefully simpler for the user now it's a menu option and doesn't require the module to be loaded any more. - Obsoletes - https://bitbucket.org/frankoid/rpcemu-spoon-fjd/changeset/03258a41ab58 - Adds - http://home.marutan.net/hg/rpcemu/rev/0fa68920a509 4) 256MB RAM, the backend now supports 256 RAM so it should heopfully be simple to add the option to the configure dialog on mac - http://home.marutan.net/hg/rpcemu/rev/e3cc334156f0