It's a known issue with Macs. Also related to Mac Shockwave support. Unfortunately, as of now it won't likely be fixed until the new client launches (Sorry, put 1.0 in an earlier version of this post). Until then, if you need something, shoot a PM to Grizzly or an e-mail to
contact@myvmk.com, or depending on the severity and nature of the report and how quickly it needs addressed, have a friend report someone for you.