Visual Studio 2012 vs 2013 - Error if running app after building using 2013

2 posts, 0 answers
  1. Kevin F
    Kevin F avatar
    46 posts
    Member since:
    Sep 2009

    Posted 04 Apr 2014 Link to this post

    I originally started building a web app in VS 2012.  I upgraded to 2013 and continued building the app.  The app is using the latest releases of the AJAX and Reporting tools.

    However, I have some issues when I run the app after I have built it in VS 2013.  I have weird errors popping up.

    One example:

    An aspx page with some combo boxes for the user to provide report parameters.  Once the parameters are selected, user clicks the button to show the report using a reportviewer.  

    When I build the web app with VS 2013 and run it, I get this error: Sys.WebForms.PageRequestManagerServerErrorException: Value cannot be null.
    Parameter name: key

    However, when I build the app with VS 2012 and run it, everything works as it is supposed to.

    Has anybody seen anything like this?  I'm baffled - and sad that I have to continue using VS 2012.  I'll be happy to post some code snippets if necessary.

    Thanks!!

    Kevin
  2. Kevin F
    Kevin F avatar
    46 posts
    Member since:
    Sep 2009

    Posted 04 Apr 2014 in reply to Kevin F Link to this post

    Well it appears this is actually an issue with VS 2013 browser link and has nothing to do with Telerik.  
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