The cloud puzzle in Myst IV - Revelation seems to be causing as many problems as the timed crystal puzzle in Spire.
But if your frustration has got the better of you then a solution is at hand:
(right click and 'save link as')
From your desktop, open 'My Documents' and copy the downloaded file into the 'myst4-revelation savegames' folder.
I have been informed that you need to copy the game into the 'save' folder in the Myst IV directory (If you are a MAC user then a more detailed explanation would be most appreciated).
Start Myst IV - Revelation and load the 'Cloud Complete' saved game (dated 30th April).
And since this is my saved game not yours, you will need my amulet solution to unlock the door in the Old Memory Chamber:

A good place to start would be the official sites:
This is the official Ubisoft Uru site. Loads of good stuff including the 'To D'ni' download, patches and wallpapers:
Here are some of the unofficial fan sites:
This is a fantastic site that explains all about the Riven Easter Eggs:
All the incongruities in Riven are here:
Uru Obsession is an amazing fan site. There is so much stuff you could get lost in there:
The chance to help with the rebuilding of Uru here:
Loads of news on the D'ni and the Myst5 - End of Ages game here:
fisicx.com is listed on the following adventure game sites:
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