Hello everyone,
I’ve tried all night to get the last version of away3d to work but at each time i try to publish the movie i get the following:
Class flash.display3D.textures::Texture could not be found.
Any help?

I have no experience with the Flash CS5 IDE, but I assume that it works similar to Flash Builder or FDT. In their cases, the SDK need to be patched to work with Flash11 Beta, which works as follows,

1. You need to download http://download.macromedia.com/pub/labs/flashplatformruntimes/flashplayer11/flashplayer11_b1_playerglobal_071311.swc
2. find the SDK directory that Flash CS5 is using.
3. in the SDK directory’s subfolder \frameworks\libs\player\10.2
4. in there, replace the existing playerglobal.swc with the one you downloaded (make sure to name it exactly the same)

Cheers!
Alex

http://videometry.blogspot.com/2011/07/setting-up-cs5-and-cs55-to-target-flash.html