Did that fix it? I don't understand why pasting images sometimes uploads it and other times it doesn't.
If I copy the image url and try to go there, is asks me to log in to view it. Dunno if that helps you at all with finding the cause.
No, I know what is happening, but what I mean is you can usually copy a pic and paste it in, and it uploads it to the forums. But sometimes, instead of pasting the image in that way, it instead hotlinks it to the original source. And the only way to tell, for me, is to individually check the address on the images.