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ambiguous in the namespace 'Telerik.Web.UI'.

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Yuji
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Yuji asked on 19 Jun 2010, 03:49 AM
Hi,

Can somebody help me with this error: Compiler Error Message: BC30560: 'RadComboBox' is ambiguous in the namespace 'Telerik.Web.UI'. Actually the error wasn't only on the RadComboBox but on all my RadControls. What is the cause of this error and how should this be fixed? I'm using RadControls for ASP.NET AJAX Q3 2009...

Thanks!

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Obi
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answered on 19 Jun 2010, 05:12 AM
Hi, I have the same problem but here is how I got into it.
I am using dotnetnuke 5.4 which uses a very recent version of Telerik controls. I installed some third party module which require an earlier version of the dll and it over wrote the DNN version during installation which apparently crashed my portal. 
So I replaced back initial dll version which dnn shipped with but then the modules wouldn't work; apparently because the version of the dll it was expecting was different from what it found. 
So I google and i find out that i can run parallel versions of a dll if one of then is in the GAC so I use gacutil to add the earlier version to the GAC. Everything seem ok until I try to build and then I get the ambiguous namespace error.
Now the issue is that I do not have the source code of the module so I cannot rebuild it and i need to run both on that DNN portal: is this even possible if yes how else what are my options.
A quick response will be greatly appreciated. Thank you.
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Yuji
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answered on 19 Jun 2010, 07:24 AM
I just figured out a solution on this myself but I'm not sure if this is solution is applicable on all scenarios. What I did was I deleted all the Telerik References on the properties of the solution and add a new one. On my case, since I'm using the RadControls for ASP.NET AJAX Q3 2009, the directory path is on: C:\Program Files\Telerik\RadControls for ASP.NET AJAX Q3 2009\Bin35.

Hope this works for you.
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