I started having a problem streaming baseball games from mlb.tv on my Mac Mini running Mac OS X 10.6.8. The player window would top at 33% and "whirlygig" indefinitely. After a quick (unsuccessful) search on mlb's tech support page, I checked my console log (Utilities/Console) to see if there was a problem. Bingo.
7/29/14 7:27:31 PM com.apple.launchd[1] (com.apple.flashupdater[592]) posix_spawn("/usr/libexec/flashupdater", ...): No such file or directory
I checkedk /usr/libexec to discover the file FlashUpdator (note the case), and A quick google of /usr/libexec/flashupdator revealed that the script attempting to launch the updater is not compatible with CaSe SeNsItIvE fIlE sYsTeMs. A quick symbolic link solved the problem:sudo ln -s /usr/libexec/FlashUpdater /usr/libexec/flashupdater"
As soon as I added the link, Adobe Flash Updater popped up a window announcing my Flash version was out of date.
Apparently this continues to be a problem into Mac OS X 10.7.4.