Yes, i mean Rich Text Editor. I figured out what the problem was. I had to add the use of table plugin to tinyMCE.init function at create.jsp and edit.jsp files, in order to make the table functionality available.

If you want to add a plugin, just go to TinyMCE webpage and find the documentation of each plugin. There, you can find instrunctions how to do it. It's very simple.

Regards,
Alex