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  • Simon Dingley 1431 posts 3332 karma points c-trib
    Aug 07, 2012 @ 13:36
    Simon Dingley
    0

    After upgrade to v4.8 - Media Uploads Fail

    After recently upgrading a site to v4.8 from v4.7.2 it is no longer possible to upload files to the media as the following exception is thrown.

    System.NullReferenceException: Object reference not set to an instance of an object.
Generated: Tue, 07 Aug 2012 11:30:48 GMT

System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at umbraco.cms.businesslogic.datatype.FileHandlerData.set_Value(Object value)
   at umbraco.editorControls.uploadField.Save()
   at umbraco.controls.ContentControl.saveClick(Object Sender, ImageClickEventArgs e)
   at System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e)
   at System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.HandleError(Exception e)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest()
   at System.Web.UI.Page.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
    I'm sure I can't be the first to have experienced but couldn't find anything directly related to it - any ideas anyone on why it happens and how to resolve?
    Thanks, Simon
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  • Sebastiaan Janssen 4899 posts 14655 karma points MVP admin hq
    Aug 07, 2012 @ 14:43
    Sebastiaan Janssen
    0

    Hey Simon, just checking that you followed all of the upgrade instructions including copying over the two new config files in the config folder?

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  • Morten Christensen 596 posts 2770 karma points admin hq c-trib
    Aug 08, 2012 @ 09:38
    Morten Christensen
    2

    Hi Simon,

    As mentioned on twitter this error is due to a change in the umbracoSettings.config (//settings/content/imaging) file for the 4.8.0. This section currently looks like this:

             <imaging>
                <!-- what file extension that should cause umbraco to create thumbnails -->
                <imageFileTypes>jpeg,jpg,gif,bmp,png,tiff,tif</imageFileTypes>
                <!-- what attributes that are allowed in the editor on an img tag -->
                <allowedAttributes>alt,border,class,style,align,id,name,onclick,usemap</allowedAttributes>
                <!-- automatically updates dimension, filesize and extension attributes on upload -->
                <autoFillImageProperties>
                    <uploadField alias="umbracoFile">
                        <widthFieldAlias>umbracoWidth</widthFieldAlias>
                        <heightFieldAlias>umbracoHeight</heightFieldAlias>
                        <lengthFieldAlias>umbracoBytes</lengthFieldAlias>
                        <extensionFieldAlias>umbracoExtension</extensionFieldAlias>
                    </uploadField>
                </autoFillImageProperties>
            </imaging>

     Everything under autoFillImageProperties is new in 4.8.0, so if you are upgrading you most merge the config files. Unfortunately there wasn't a proper checking of these settings implemented, which is causing the exception you are seeing. We will release a 4.8.1 patch release, which will fix this but you should still merge the configs for the best result and to avoid problems ;)

    - Morten

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  • Simon Dingley 1431 posts 3332 karma points c-trib
    Aug 08, 2012 @ 10:09
    Simon Dingley
    0

    Thanks Morten, an oversight on my part during the upgrade process but agreed it should fail gracefully as unfortunately the client discovered this before me on this occasion. 

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