Yesterday I was working on my application and the graphics looked fine. I updated to El Capitan this morning and when going back to work had artifacts and a warning regarding the Carbon Component manager.
Full error. 2015-10-01 15:03:25.649 Python[1301:411338] 15:03:25.649 WARNING: 140: This application, or a library it uses, is using the deprecated Carbon Component Manager for hosting Audio Units. Support for this will be removed in a future release. Also, this makes the host incompatible with version 3 audio units. Please transition to the API's in AudioComponent.h.
It appears to be audio related, but somehow it is also effecting my graphics.
I know that there is always a risk when upgrading right away, and luckily it is more annoying than stopping me from working.