For the first time in a long while, Apple is going to be offering a public beta program for the next version of OS X, called Yosemite. This program will allow users to get a sneak peek at the new version of the OS, and provide feedback to Apple before the final release. As far as Fat Cat Software products are concerned, the main two things you need to know are: All of our products will support running on final release of Yosemite when it comes out in the fall. Our products are not officially supported on the Yosemite beta releases. If you want to get real work done, please run on Mavericks or earlier. Continue reading for more details on how we’ll be handling the Yosemite beta…Our initial testing of our software on Yosemite has not yet turned up any major bugs (though a couple minor ones do exist). However, it is possible that there are bugs that have not yet been discovered, or new bugs that will surface when Apple posts further updates to the Yosemite beta. So, if you do choose to run the Yosemite beta, it is very possible that you may encounter problems that will prevent you from using some functionality of our software. If you do think you’ve found a bug, please do get in touch with us by email! We want to get things fixed before the final release, so bug reports are welcomed. However, we cannot guarantee that any reported bugs will be fixed in a definite timeframe, especially if the cause is actually a bug in Yosemite itself. If you do encounter a bug that prevents you from doing something on Yosemite, you will need to fall back to running on Mavericks or earlier to complete whatever task you’re trying to accomplish. For those who are running the Yosemite beta, here are a couple specific notes on issues we’ve found so far: Apple has said that for the time being, only iPhoto 9.5.1 and Aperture 3.5.1 will run properly on Yosemite, and earlier versions of both programs will not launch. It’s not clear yet whether this will still be the case for the final Yosemite release. If you’re using iPhoto Library Manager or FlickrExport on Yosemite, please make sure you’ve updated to the latest versions of iPhoto/Aperture. There is also a beta version of iTunes 11.2 included on the current Yosemite seeds. Initial testing indicates that PowerTunes works OK for the most part with the new version. The only known issue is that, if you have an iTunes library file that does not have a .itl file extension on the filename, iTunes will not open that library. You can work around this by adding a .itl extension to the library file manually When running iPLM or PowerTunes, you may briefly see a message on launch saying that it is “checking version compatibility”. This is normal, and you will continue to see this message briefly each time you launch until the final version of Yosemite is released.