If you encounter the error 'decompression failed' when downloading a preview there is a simple solution. Simply open your decompression software on your Mac (usually StuffIt) and drag the downloaded zip file into the application. It will unzip/decompress immediately.
We recommend you download the latest, free StuffIt software for your Mac which can be downloaded here.
If you are using a Windows XP or later based machine you can unzip/decompress files from the properties menu. Simply right click on the zipped/compressed file and select "Open With" and select "Compressed Zipped Folders"
