Uninitialized string offset: 0 in tinymce.module on line 131.

i've used tinymce 3.0.5 and installed it for drupal 6.x.1.dev by following the instruction i.e. keeping the package in drupal tinymce.
but in every pages i get notice of following type:

Uninitialized string offset: 0 in tinymce.module on line 131.
notice: Undefined variable: init in tinymce.module on line 365.

hope to find a help soon from you all.