Hello, I tried to install Flash Builder Beta 2 on my Mac OS X Snow Leopard 10.6.2 but unfortunately I'm getting the error message:
The installer requires that you close your browsers before continuing, because they are using system files that must be updated.
Flash Builder cannot function properly if these files are not updated.
I closed all my browsers, I restarted I stopped xmarks service but still I got the same error.
PS: I found also a related unanswered topic here
I found the solution!
Open Activity Monitor and search for either xmarks for safari and Growl for Safari kill both of them and then you should be able to install Flash Builder properly