I am curious which version of windows you have. I am using win7 and had initial trouble with the adobe flash and Java not working. But I have had no problem with popups since installing adblocker plus for Firefox. I think to make everything work properly I had to remove the ad ons to Firefox before reinstalling Firefox.
I am using .... ..Windows XP ... Professional Version , because Vista ..well lets not talk about the issue list I have with that system . Not had a chance to look over win7 yet . Checking out that Adblock plus add on you spoke about ...going to uninstall and reinstall but that looks pretty interesting indeed.
I know that casalemedia is responsible for many of the pop-up ads. Maybe try blocking just that provider? I'm thinking that might allow photobucket to do whatever pop-ups it wants to through non-ad sources and block the host that's causing the error.
It gives the same error line ...just changes to whatever site the current silly advertising pop-up is on the page .
This happened to me as well, but there's a way around it. Underneath the big green button that says Upload Images and Videos, look for a line that says "Use our bulk uploader: upload multiple files, fast". For some reason, using the bulk uploader allows you to upload pictures that the normal uploader denies. Let me know if it works, since I think it's the same problem I was having until I discovered the bulk uploader.
I did look at that bulk loader once ...seemed complicated , took awhile to load ...though might try that and see if it does any better .
Try uninstallng Firefox and then download a fresh copy.
It worked for me when Gmail would automatically open into Calendar (for some reason) when ever I wanted to check my gmail. Gmail worked fine in IE, so I figured it was a Mozilla issue. Sure enough, deleting/installing did the trick.
Seriously hate this solution Eeyore my love ....but you most likely might be right . Will move here first see if it was just an error in downloading that maybe they fixed . Since when i went to click on the help button others were complaining about uploading pics to ebay upon upgrading as well . So maybe it is just a silly little glitch and they fixed it already .
Smiles and walks of grumbling ....
Thank-you all for your suggestions ...hugs and kisses .... I be back to tell if reinstalling it works .