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Javascript errors "null or not an object" and "Could not complete the operation due to error 8007fff

Posted By:      Posted Date: April 10, 2011    Points: 0   Category :C#
 

I am getting several javascript errors that I haven't been able to fix. So far, searched have proved fruitless...

We first noticed the problem on 3/31/2011 when we were updating some pages. 

I got a call from one of my power users that a webpart was "locked" and couldn't be opened.  When you first browse to the page, everything looks okay.  When you click on the dropdown to open the menu to modify the webpart, an "Error on page." message shows up in the lower left of the IE browser. 

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C; .NET4.0E)
Timestamp: Fri, 1 Apr 2011 17:14:07 UTC


Message: 'style.display' is null or not an object
Line: 2134
Char: 4
Code: 0
URI: http://rtshare/_layouts/1033/ie55up.js?rev=Ni7%2Fj2ZV%2FzCvd09XYSSWvA%3D%3D

I copied the contents of the web part (content editor web part) and pasted it into a new web part.  I killed the old one by opening up Web Part Page Maintenance page "?contents=1".  That got rid of the web part that was acting up.  It turns out, there is a larg


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