I'm building a module and have run into a problem where the TextEditor toolbar icons are gray blocks in IE, but normal in Chrome.

The toolbars were working fine until sometime yesterday when I closed the computer and reopened it an hour later.  Not sure what might have happened. 

I've tried restarting IIS, restarting Windows, clearing everything in IE, and rebuilding the project.  

I checked on another page of the site using the core HTML module and see the same problem (works in Chrome, not in IE), so it may not be a module development issue, but something is screwy with the site.

Any ideas where to look?

Hi Sebastian,

Thanks for the quick reply. I had already tried clearing the IE cache, but did so again. Again, no change in symptoms.

I opened the developer tools and tried every version of IE and document - any other than IE9 (the defaults) caused the icons to look like bits of some image (possibly another image on the page), but definitely not the correct toolbar icons.

Thinking this might not be an issue with just this instance, I checked on a couple of my live sites, and I see the same issue with them as well.  Other browsers work, IE does not. 

Any other thoughts?

Hi Sebastian,

Using DNN 6.2.3 and the default DotNetNuke.RadEditorProvider.

Tried updating settings with no result.