@tig said: The Ruby files within the Plugins folder should all be .RB, those within the extensions' subfolders in the Plugins folder can be .RB, .RBS or .RBE... The ' loader' file should be called by some earlier code using the correct method... For .RB files it can be done with require(relative_path_to_file) with .rb filetype-extension shown Also load(full_path_to_file) with .rb filetype-extension would work BUT for encrypted files it is different - Sketchup::require(path_to_file) and then the filetype-name is optional. Because the loading code is almost certainly encrypted only the author can fix file path weirdness... Ok. I've already sent a message to the author reporting the problem. I thank you all for the attention paid and the help.

@pilou said: On the link of Dave it's writed prior 2017 so it's prior also 2016! So fine for the 2015 Make! My files linked "C:\Users\user\AppData\Roaming\SketchUp\SketchUp 2015\SketchUp\Plugins..." yesterday night I could download and test RoundCorner_v3.1b and it finally worked. I'm so glad! I also could download LibFredo6_v8.0c and it worked like a charm. I saved the RoundCorner version that you have put available anyway but also will attach my RoundCorner version. LibFredo is too big to attach. I thank you all for the help. [mod=:13z9pkfv]Extension file removed. Please don't add copies of extensions from other authors. It results in confusion for others. In this case Fredo6's Round Corner for older versions of SketchUp (pre-2017) is available here.[/mod:13z9pkfv]

@pilou said: [attachment=1:1xxfgg4z]<!-- ia1 -->qfaces.jpg<!-- ia1 -->[/attachment:1xxfgg4z]Working without problem (2015 make) Maybe mine is an old version... Here my files who are in "C:\Users\user\AppData\Roaming\SketchUp\SketchUp 2015\SketchUp\Plugins..." hi pilou. my QuadFaces is working fine. I thank you all for the help. you helped me a lot!