Avid’s music notation software Sibelius and editing control software EUCON is not compatible with Mavericks. Avid has posted to their site “It is not recommended to use Sibelius or EUCON with Mac OS X 10.9 (Mavericks) as they are not supported at this time. Avid will announce support for Mac OS X 10.9 with future releases of software.”

Avid’s audio software Pro Tools has been updated to 11.0.3 for support with OS X 10.9. This version however is has problems with OS X 10.9.1, resulting in no sound out. Avid has posted to their site “Mac OS X 10.9.1 Mavericks is NOT approved at this time and should not be used until Avid announces support for it.”