Answer

I am trying to upload an image onto the forum, used imgur.com, I copied the image's address... pasted it where we have to... but the forum says I can't use that image extension, I always use imgur and I have no problems at all. So why isn't the forum letting me post my picture?

Answer
Problem solved
Reload the webpage or try uploading it on another image hosting website and try again.

But I've tried on several different topics and this is the ONLY image that won't work... and I don't think you can use any other image extension than imgur.com
Customer support service by UserEcho
Reload the webpage or try uploading it on another image hosting website and try again.
How to upload an image?