'asp' is an unrecognized tag prefix or device filter

Discussion in 'ASP .Net' started by Roger Helliwell, Nov 21, 2004.

  1. 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 Helliwell, Nov 21, 2004
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  2. Roger Helliwell

    Guest Guest

    Guest, Nov 22, 2004
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  3. 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

    and the problem miracously disappeared.

    Roger Helliwell, Nov 22, 2004
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