'asp' is an unrecognized tag prefix or device filter

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Roger Helliwell - 21 Nov 2004 23:31 GMT

Hey guys,

Just sat down this morning to continue on a project (using Whidbey)
I've been working on for 3 months. To my surprise (which quickly
turned to horror) I started receiving the following error on every
single aspx page:

'asp' is an unrecognized tag prefix or device filter

I'm baffled. The solution builds fine, and each page seems to build
fine (CTRL+F8), but I can't switch to Design view on any page. I have
made no changes to my config that I know of.

Does anyone have any ideas as to how I can make things right?

Roger

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MikeL - 22 Nov 2004 04:09 GMT

The best people to answer this will be at

http://asp.net/Forums/ShowForum.aspx?tabindex=1&ForumID=137

HTH MikeL.

> Hey guys,
>
[quoted text clipped - 12 lines]
>
> Roger

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Roger Helliwell - 22 Nov 2004 10:43 GMT

On Sun, 21 Nov 2004 20:09:02 -0800 in
microsoft.public.dotnet.framework.aspnet, "MikeL"

>The best people to answer this will be at
>
>http://asp.net/Forums/ShowForum.aspx?tabindex=1&ForumID=137
>
>HTH MikeL.

Thanks for pointing me in the right direction. On a whim, and like
others suggested, I deleted the contents of

C:\Documents and Settings\[Username]\Application
Data\Microsoft\VisualStudio\8.0\ReflectedSchemas

and the problem miracously disappeared.

Roger

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Ross Tomei - 06 Apr 2005 08:50 GMT

Hi Roger,

I am also "suddenly" receiving the mysterious error, "'asp' is an
unrecognized tag prefix or device filter". I have tried your solution and
the problem still exists. Also the asp.net forums article in a previous
thread no longer exists.

Is there any other guidance that you can provide? I'm using Visual Studio
Web Developer Express Edition and Visual Studio .Net Team System Beta 1
Refresh.

Much appreciated.

Ross.

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'asp' is an unrecognized tag prefix or device filter

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