Hi guys!!!
I don't know why, but just doing what FREDO and you TIG said (closing sketchup, deleting LIBFREDO& folder and it's subfolders) and reopening sketchup again, everything runs smoothly again!!!
I really thank the time spent trying to find a solution to my problem guys. THANKS A LOT.

Hi Fredo, and thanks for your reply.
I don't understand what should I do. When you say "clean up" you mean deleting the LIBFREDO6 folder and its subfolders?
And then, what should I do? download LIBFREDO again?
Thanks for your help...

Hi guys... Since no news about this issue, I guess there's no solution for my problem... Anyway I would like to thank you again for the time spent trying to give me some clues about the origin of the failure. I'm sure it should be something easy to rearrange, but i don't know what to erase/uninstall and to reintall/setup it again... Should I try to erase by hand the LIBFREDO folders and subfolders in AppData root?
Any more clues will be really welcome!!!
Thanks again and have a good day.

Hi guys. And thanks a lot for your replies.
I've tried checking those folders, and it seems the users in my PC (SYSTEM; PCCom-PC; Administrators (PCCom-PC\Administrators) have all the permissions (except last one of the list (special permissions) which cannot be ticked as it's greyed.
This happens in all the folders-subfolders you've mentioned.
The last one (Default parameters, inside LIBFREDO6_DATA_Dir) has nothing inside.
I have no idea about what can be causing this problem...
Thanks for your time.

Hi TIG, and thanks a lot for your quick reply.
I've been using those great plugins from Fredo in previous versions of Sketchup, always without any problems.
But when I opened the Ruby Console, I got this message after trying to use the strechting tool from FredoScale:

Error: #<Errno::EACCES: Permission denied - C:/Users/PcCom/AppData/Local/LIBFREDO6_DATA_Dir/LibFredo6_all_defaults.dat>
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:145:in initialize' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:145:in open'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:145:in write_to_file' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:128:in store'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Plugin.rb:1104:in usage_use' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Plugin.rb:1092:in command_invoke'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Plugin.rb:1075:in block (2 levels) in build_config_commands' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Traductor.rb:1112:in call'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Traductor.rb:1112:in block in add_command' SketchUp:1:in call'

And when I tried to use the RoundCorner plugin, I got this message at the Ruby Console:
Error: #<Errno::EACCES: Permission denied - C:/Users/PcCom/AppData/Local/LIBFREDO6_DATA_Dir/LibFredo6_all_defaults.dat>
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:145:in initialize' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:145:in open'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:145:in write_to_file' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Registry.rb:128:in store'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Plugin.rb:1104:in usage_use' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Plugin.rb:1092:in command_invoke'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Plugin.rb:1075:in block (2 levels) in build_config_commands' C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Traductor.rb:1112:in call'
C:/Users/PcCom/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6/Lib6Traductor.rb:1112:in block in add_command' SketchUp:1:in call'

Any clue about the problem which is causing these plugins failure?
Thanks a lot in advance!

Hi everybody.
First of all, thanks for the great work keeping this blog alive.

I'm finding some troubles with Fredo Plugins. I'm running Sketchup Up 2015 Pro version, and I've installed Libfredo, FredoScale, Curviloft and RoundCorner (all of them, last updates).
First strange thing: I installed these plugins through Sketchucation Plugin Store manager, and i find these plugins installed as "plugins" and "extensions".
Second: These plugins (or extensions, or whatever they are) show on the toolbar, everything looks right, but they simply do not work. Clicking on them and it's like nothing is done.
I've tried to disable them, uninstall them, I've closed sketchup and opened it again, re-installed everything, and nothing.
I've disabled and uninstalled all these plugins / extensions, and even erased the files (and subfolders) from the plugins folder c:user:appdata:roaming:skechtup:sketchup2015:sketchup:plugins
but with no better results.

Anyone has got a clue about what could be happening?
Thanks a lot.

hi all, I'm having the same problem... After installing vray for sketchup, while opening any file or saving any work, sketchup crashes and generates a bugsplat... I don't know if there is any solution to this.
thanks in advance...