Question / Problem
I'm using TreeSize Professional on Windows Vista: How can I enable the "TreeSize" column in the Windows Explorer which shows the size for each folder? This was available in Windows XP!
Answer / Solution
Unfortunately it is not possible to provide this extension for the Explorer of Windows Vista because Microsoft has removed a required interface from this version of Windows. Microsoft has officially confirmed that adding a similar extension for the Explorer of Windows Vista or higher won't be possible.