TinyMCE, img_assist, DrupalImage button not appearing for image insertion

Hi folks, I am having problems installing the TINYMCE module with the img_assist module.

I need to place, within the TinyMCE toolbar, a Drupal Image button with which I can insert images in my posts by using the img_assist module.

At the moment, I managed to configure the drupalimage module inside tinyMCE ok and the option to add this button to tinyMCE editor DOES appear in the TinyMCE profile configuration page..

I enable it, but when I go to creating a blog post for example. The TinyMCE editor all opens up ok except for the DrupalImage button not showing up at all..

I searched around and saw that there are a few fixes and bug issues here and there.

Can anyone put me along the right lines please?

Thanks in advance