[Plugin: Black Studio TinyMCE Widget] Visual editor unload, giving a js error

With version – 0.6.2
When I tried to save the text, WYSIWYG Editor unload automatically giving a script err –

j is null
error source line: [Break On This Error] (function(d){var a=/^\s*|\s*$/g,e,c="B...a.selection.onSetContent.add(f)})}});

Thanks.

http://wordpress.org/extend/plugins/black-studio-tinymce-widget/