ABAP Webdynpro Development - Script Error when Accessing Visual Elements

I am encountering a strange error at my client .  I can't use the Abap Webdynpro visual elements to build views .

To reproduce the error :

- T-code SE80

- Open up any ABAP webdynpro component .

- Open up one of the view  and go on Tab Layout .

Normal Screen : You would see many WYSIWYG items ( buttons, radiobutton , text elements etcu2026. ) at the left side u2026 these elements are used to build the view .

Here : No elements displayed and when we click on that area we get an error   . 

Instead of the elements to get displayed .. lines are displayed and when you try to open up ( click ) the lines , an internet explorer script error stating the following occurs ( although the abap wendynpro is edited in SAP Gui ) :

An Error has occured in the script on this page .

Line : 1

Char : 25

Error : Object Required

Code: 0

URL : http://hdrerpdev05.bchydro.bc.ca:8100/sap/bc/wdvd/toolbar.html?_vdrespkey=4KE8FGJO3P88DO8K5XCEYHTEA&_vdframe=toolbar&usedynp=&usepat=&sap-client=100

Anybody had had the same kind of error before ^^????

Thanks and Best Regards !