Comments on: “invalid character” and “ajaxcontroltoolkit is undefined” errors on some comptuers http://danny-t.co.uk/index.php/2008/07/23/invalid-character-and-ajaxcontroltoolkit-is-undefined-errors-on-some-comptuers/ Web apps fanatic, ramblings on dev for web, mobile and other geeky stuff Wed, 25 Jan 2012 21:06:40 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Michael Kelleher http://danny-t.co.uk/index.php/2008/07/23/invalid-character-and-ajaxcontroltoolkit-is-undefined-errors-on-some-comptuers/comment-page-1/#comment-100788 Michael Kelleher Tue, 09 Mar 2010 15:11:17 +0000 http://danny-t.co.uk/?p=122#comment-100788 I had the same issue. I hope this helps someone as it was driving me mad for days. The autocomplete extender would work for some users and not for others At the top of my aspx page i was registering the ajax control toolkit I resolved the issue by removing this line from the page and declaring the ajaxcontroltoolkit in the web.config I had the same issue. I hope this helps someone as it was driving me mad for days. The autocomplete extender would work for some users and not for others

At the top of my aspx page i was registering the ajax control toolkit

I resolved the issue by removing this line from the page and declaring the ajaxcontroltoolkit in the web.config

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