[W.I.P.] Curve Tools plugin

[tkbd]

Humm....,I download new version and got an error and the plugin wasn't recognized.
For find of the problem. I deleted the previous time installed plugins directory and install it newly ,but got the same result.

This is the log immediately after installation.
(I did install with curves.tar file by File > Install Plug-in & Patch)

Code:

Installed plugin to /Users/user/Library/Application Support/Wings3D/2.2.6.2.gf0e56/plugins
wpc_curves_win:init/0 bad return value: {'EXIT',
                                         {undef,
                                          [{wpc_curves_win,init,[],[]},
                                           {wings_plugin,init_plugin,2,
                                            [{file,"wings_plugin.erl"},
                                             {line,184}]},
                                           {wings_plugin,init_plugins,1,
                                            [{file,"wings_plugin.erl"},
                                             {line,168}]},
                                           {wings_plugin,install,1,
                                            [{file,"wings_plugin.erl"},
                                             {line,291}]},
                                           {wings_develop,time_command,2,
                                            [{file,"wings_develop.erl"},
                                             {line,87}]},
                                           {wings,raw_command,4,
                                            [{file,"wings.erl"},{line,641}]},
                                           {wings_wm,handle_event,3,
                                            [{file,"wings_wm.erl"},
                                             {line,1030}]},
                                           {wings_wm,send_event,2,
                                            [{file,[...]},{line,...}]},
                                           {wings_wm,do_dispatch,2,
                                            [{file,...},{...}]},
                                           {wings_wm,dispatch_event,1,
                                            [{...}|...]},
                                           {wings_wm,get_and_dispatch,0,[...]},
                                           {wings,init_part2,3,...},
                                           {proc_lib,init_p_do_apply,...}]}}
wpc_curves:init/0 bad return value: {'EXIT',
                                     {undef,
                                      [{wpc_curves,init,[],[]},
                                       {wings_plugin,init_plugin,2,
                                        [{file,"wings_plugin.erl"},
                                         {line,184}]},
                                       {wings_plugin,init_plugins,1,
                                        [{file,"wings_plugin.erl"},
                                         {line,168}]},
                                       {wings_plugin,install,1,
                                        [{file,"wings_plugin.erl"},
                                         {line,291}]},
                                       {wings_develop,time_command,2,
                                        [{file,"wings_develop.erl"},
                                         {line,87}]},
                                       {wings,raw_command,4,
                                        [{file,"wings.erl"},{line,641}]},
                                       {wings_wm,handle_event,3,
                                        [{file,"wings_wm.erl"},{line,1030}]},
                                       {wings_wm,send_event,2,
                                        [{file,[...]},{line,...}]},
                                       {wings_wm,do_dispatch,2,
                                        [{file,...},{...}]},
                                       {wings_wm,dispatch_event,1,[{...}|...]},
                                       {wings_wm,get_and_dispatch,0,[...]},
                                       {wings,init_part2,3,...},
                                       {proc_lib,init_p_do_apply,...}]}}