Paypal button image not behaving

I am using my own button with the shortcode, and the attribute is

image=" http://scrapbookcampus.com/Images/buy-now-yellow-150.png" 

However, although i am using the exact same button, the same exact attribute, sometimes, it does display the default Paypal button.

Right now, i am setting up a hidden thank you page, and using that exact same attribute, it display the default one. Not sure if it will display correctly for you or not, but here is the link where i am setting up that button.
http://scrapbookcampus.com/webinar-thankyou-ma2012/

Even when i refresh, i am not getting my own custom button. It did happen in a previous page, and it suddenly corrected itself and i have no clue what changed. Any idea why this happens?

Never mind. I think i figured it out. Since i dont know much about HTML, i create the pages in a web editor and whenever i add a shortcode like the Paypal button, the editor adds spaces everywhere in the code messing up that attribute (i know it keeps the ra attribute ok though), so i have to go back into the WP page and put the shortcode “spelled correctly” and bypass the web editor. Annoying, but since i know, i should be ok.

Hopefully, it might help others who are not HTML savvy, like me!

Yeah, was gonna mention the extra space there. Glad you sorted it out. :)