All,
If you've downloaded the source code for the Noise plugin or the Layers plugin before today at
http://bellsouthpwp.net/a/t/atomicd/ac3dplug/index.html please download the source code again - some files were missing from the downloadable archives.
The latest Layers plugin was missing the header "DDHUndoableHide.h", and the Noise plugin was missing the file "noise.cpp".
Thanks to Eldon and AJ for spotting these.
Dennis