I've tried several times to install the plugin but everytime I get this error message:

Error Loading File __loader.rb
uninitialized constant TraductorError Loading File bootstrap_Curviloft.rb
uninitialized constant Curviloft::T6Error Loading File CurviloftAlgo.rb
uninitialized constant Curviloft::T6Error Loading File CurviloftCurveMover.rb
uninitialized constant Curviloft::T6Error Loading File CurviloftPalette.rb
uninitialized constant Curviloft::T6Error Loading File CurviloftTool.rb
uninitialized constant Curviloft::T6

What's wrong?