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The given key was not present in the dictionary? FileUltimate
Question asked by Barclay Berger - October 14, 2014 at 1:46 PM
Answered
when I open examples or create new project and reference dll and add control I get the error in both?  What am I missing?

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Cem Alacayir Replied
October 14, 2014 at 2:52 PM
Employee Post
This error is not FileUltimate related, it's Visual Studio related:
 
One of Visual Studio’s most cryptic error messages is Server Explorer’s infamous “the given key was not present in the dictionary.” This typically means that you’ve installed a custom data provider, created a Server Explorer connection using that provider, and then uninstalled the provider without deleting the Server Explorer entry.  This pretty much kills Server Explorer: from now on, any time you try to add or remove a connection, it barfs up the useless error.  This means you can’t even remove the dud connection.
 
I guess this link will solve your problem:
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Rob Wells Replied
January 8, 2015 at 10:13 PM
Hi there... I'm experiencing the same problem after trying to install a trial version of FileUltimate. It happens when I load the ASPX page in my browser. If it's relevant, I'm not using design view at all. The linked fix did not work. I tried to drop it onto a barebones ASPX page with nothing else in it. Any thoughts?

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