error object reference not set to an instance of an object - Image Cropper

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Tom Allen 50 posts 71 karma points

Sep 15, 2011 @ 16:52

Error: Object reference not set to an instance of an object.

Image Cropper

I get this most unhelpful error when adding an Image Cropper to a document type, and attempting to edit/create new nodes with that type. Please help me out here!

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.editorControls.imagecropper.DataEditor.OnInit(EventArgs e) +671
   System.Web.UI.Control.InitRecursive(Control namingContainer) +140
   System.Web.UI.Control.InitRecursive(Control namingContainer) +311
   System.Web.UI.Control.InitRecursive(Control namingContainer) +311
   System.Web.UI.Control.InitRecursive(Control namingContainer) +311
   System.Web.UI.Control.InitRecursive(Control namingContainer) +311
   System.Web.UI.Control.AddedControl(Control control, Int32 index) +197
   System.Web.UI.ControlCollection.Add(Control child) +79
   umbraco.controls.ContentControl.addControlNew(Property p, TabPage tp, String Caption) +3674
   umbraco.controls.ContentControl.CreateChildControls() +610
   System.Web.UI.Control.EnsureChildControls() +102
   umbraco.controls.ContentControl.OnInit(EventArgs e) +32
   System.Web.UI.Control.InitRecursive(Control namingContainer) +140
   System.Web.UI.Control.AddedControl(Control control, Int32 index) +197
   System.Web.UI.ControlCollection.Add(Control child) +79
   umbraco.cms.presentation.editContent.OnInit(EventArgs e) +1249
   System.Web.UI.Control.InitRecursive(Control namingContainer) +140
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +480

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Radek Rezac 1 post 21 karma points

Sep 21, 2011 @ 21:22

0

Probably you use image cropper in the content section instead of media section. Image cropper can be used only with media section datatype.

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Karen Tucker 1 post 23 karma points

Sep 23, 2011 @ 10:40

2

I had the same problem. The image cropper does not have to go in the Media section, it can be applied to a Document Type, you will need to do the following:

- Create an Image Upload Property in the Document type;
- Create an Image Cropper Data type;
- And when adding the Property alias value to the Image Cropper Data type, ensure that it has the same value as the Image Upload Alias.
- Add the Image Cropper Data type to the Document type

See screen grabs below.

Upload Property in the Document type:

Image Cropper Data type:

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Greg Berlin 818 posts 634 karma points

Sep 12, 2012 @ 23:21

0

Awesome, thanks so much!

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