I think I got it, I went to my plugins folder and permissions were set to read only, i made it read and write and now it shows up

Thank you for the quick response. Yes, if I click the first tool this comes up in the ruby console, I have no other plugins installed.

"Error: #<Errno::EACCES: Permission denied - /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/Fredo6Trace.txt>
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Core_47.rb:712:in initialize' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Core_47.rb:712:in open'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Core_47.rb:712:in trace6' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/ROUNDCORNER_Dir_23/RoundCorner_Tool.rb:314:in init_palette'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/ROUNDCORNER_Dir_23/RoundCorner_Tool.rb:127:in initialize' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/ROUNDCORNER_Dir_23/RoundCorner_Tool.rb:42:in new'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/ROUNDCORNER_Dir_23/RoundCorner_Tool.rb:42:in launch' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/ROUNDCORNER_Dir_23/RoundCorner_Tool.rb:33:in action__mapping'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Plugin.rb:132:in call' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Plugin.rb:132:in launch_action'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/ROUNDCORNER_Dir_23/bootstrap_RoundCorner.rb:143:in launch_action' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/ROUNDCORNER_Dir_23/bootstrap_RoundCorner.rb:159:in startup'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Plugin.rb:1092:in call' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Plugin.rb:1092:in command_invoke'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Plugin.rb:1074:in build_config_commands' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Traductor.rb:1061:in call'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Traductor.rb:1061:in add_command' /Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Core_47.rb:712:in call'
/Library/Application Support/Google SketchUp 8/SketchUp/Plugins/LIBFREDO6_Dir_47/Lib6Core_47.rb:712
"

So I cant get the round corner plugin to work. I installed Fredo6 and then round corner, the 3 tool toolbar shows up but NOTHING ELSE. Here is a screen shot. Can anyone help?
Sketchup version 8.0.16845
and fredo and round corner are up to date according to the "check plugins for up to date"