I have an ImageData content that has 3 different sizes, specified using the image descriptor attribute, ref:
The resized images are not created correctly, and this error message is located in my log file:
ERROR EPiServer.ImageLibrary.ImageServiceClient: Exception calling ImageService RenderImage methodSystem.Runtime.InteropServices.COMException (0x800703FA): Illegal operation attempted on a registry key that has been marked for deletion.
This error only occurs on our test server, I works as expected locally.
This also applies to EPiServer's thumbnails, when accessing a thumbnail EPiServer throws an error:
[NullReferenceException: Object reference not set to an instance of an object.] at EPiServer.Core.ThumbnailManager.CreateBlob(Uri thumbnailUri, Blob blobSource, ImageOperation imgOperation, String mimeType)
The solution: run iisreset on the server :/
Just had the same issue and indeed iisreset fixed it (for now).I'm curious however to what causes this.