[kazan]

What exactly do you mean by "After you upload the panoramic image, click the 'Large Post' link next to the photo to upload the larger (up to 4000 pixel) image."

I am not allowed to upload any image larger than 800px, and there is no prior button for "Large Post"...

I tried your guidelines and I got this message...
"Maximum length of photo may not exceed 800 pixels.
Please resize your photo, apply necessary sharpening, and then upload to TrekEarth."

So, Adam, what did I do wrong?

Panos