THANKS! works great now.

Thank you all for your suggestions- I realized the the color by slope plugin (separate from libfredo) that I had tried to install the day before, was also not loading and therefore also part of the error message.

The other plugins in my plugins folder all work, except for color by slope, and now the libfredo. The plugins folder seems kind of cluttered now. Is that ok?

As regards to permission, when I tried to install the libfredo, I did get the popup window asking for password in order to make changes to the plugins folder, and I gave it (since it is my own computer). I wasn't asked to give that access password in order to create any other folders or give access at any other point in the installation - and I do not know how to create the DEFPARAM_Dir folder that it asks me to create manually. (or rather, I don't trust myself to do it correctly and have things work)

Should I just try to do it manually? Will that work, do you think?

Thanks for helping a total novice!

Can someone please help me out?

I have installed the libfredo6 according to instructions but i get these two messages on seketchup 8 startup:

Cannot load plugin LibFredo6 because the script cannot create DEFPARAM_Dir folder in:
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins

Please create it manually, respecting the case

AND THEN

Error Loading File clf_color_by_slope.rb
undefined method file_loaded?' for main:ObjectError Loading File LibFredo6.rb undefined method average_load_time' for Traductor::Plugin:Class

what can i do about this? I am working on a mac with snow leopard.

Many thanks for your help!