I have a Joomla admin panel build on Joomla 1.5 , and it uses tinymce 2.12 . The problem with the editor occurs in chrome . Works fine in firefox.
Here is the Image of tiny MCE on Page load.

When i Click on HTML it pops up the html editor . Image:

As I press the update Button in popup , the tiny MCE edior turns out GREY and doesn't allow any editing .Image : 
Although on Save and Apply The content added in popup is saved properly . Can anyone help me out what is the issue with the Tiny MCE not performing well in CHROME ? is there any update of TinyMCE for joomla 1.5 ? I tried with tinyMCE 3 for Joomla 1.5 But that doesn't work .
Thank you !