Me Bitching (you may want to skip to the end for the fix)
The newest version of Microsoft PowerPoint 2007 (2008 for the Mac) writes to the new file extension .pptx which supposedly gives it advantages over the old .ppt style. I've had to work with PowerPoint files made with Office 2007 a lot recently and I've noticed that the file size of the PPTX kept growing and growing. Pretty soon the file had grown to 22 MB from the original 3 or 4 MB.
I recently had to port a project that I am working on to Actionscript 3 from Actionscript 2. It was a pretty smooth transition until I came to a point where I needed to access the main timeline within a dynamically placed movieclip. I was tearing my hair out trying to figure out how to freaking access the main timeline!
In Actionscript 2 it would be
To do this in Actionscript 3