Problems with video and forum ADD

Please I need help, when trying to insert a new forum topic I click on new topic and nothing happens an information bar appears below the page saying:
For more information about the Web page error

User Agent: Mozilla/4.0 (.. Compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB7.3; BTRS129225; NET4.0C; NET4.0E; InfoPath.1)
Time stamp: Sun, 13 May 2012 22:49:34 UTC


: Syntax error message.
Line: 538606897
A letter:
Code: 0
URI: http://macaws.dekasseguis.com/forum/?action=goto&index=1


Message: 'tinyMCE' is not declared.
Line: 2076
9 characters:
Code: 0
URI: http://macaws.dekasseguis.com/forum/?action=goto&index=1


Message: 'tinyMCE' is not declared.
Line: 3973
Five characters:
Code: 0
URI: http://macaws.dekasseguis.com/gzip_loader.php?file=bx_templ_js_d73e79c100c538553fcce0280af48f02.js


Message: 'tinyMCE' is not declared.
Line: 3973
Five characters:
Code: 0
URI: http://macaws.dekasseguis.com/gzip_loader.php?file=bx_templ_js_d73e79c100c538553fcce0280af48f02.js

And When a try too add a new video uploading or embed code the error is:

For more information about the Web page error

User Agent: Mozilla/4.0 (.. Compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB7.3; BTRS129225; NET4.0C; NET4.0E; InfoPath.1)
Time stamp: Sun, 13 May 2012 22:54:49 UTC


This property or method is not supported by the object: the message.
Line: 1
153 characters:
Code: 0
URI: http://macaws.dekasseguis.com/m/videos/albums/my/add_objects/aknagai-s-videos/owner/aknagai


This property or method is not supported by the object: the message.
Line: 1
139 characters:
Code: 0
URI: http://macaws.dekasseguis.com/m/videos/albums/my/add_objects/aknagai-s-videos/owner/aknagai

The address of my website is:

http://macaws.dekasseguis.com/
Help me please.

Your site has javascript errors.

Go into admin then to settings then to advanced settings then to template. Turn off(un-check) the options for JS caching and JS compression. Then back to the admin dashboard and clear the cache. Clear ALL

Then try again.

Thank you very much, Im go to do this rigth now, I appreciate.

Hi deano, I did ecxacle what you says but the problem persist the same, when I click in the new topic nothing happens, what more can i do?,

One more thing same times when i refresh de page or change for another page this message error come to display, and the line error change some times.

Fatal error: Cannot run code from this file in conjunction with non encoded files in È on line 164

 please help me.

It would appear you have some damaged files somewhere. It is beyond my ability to find by simply browsing the site.

You may have to hire someone to go in, track it down and fix it.

Im understand thankyou