I am using windows xp and am having no problems bulk loading images. My wife is using vista and cannot bulk load. It says you have to install active x which we have tried to do but to no avail. You try to drag and drop it pops up in another windows,says it has to open another window for different security---something--- forgot exactly what it is it says.
I have seen a few posts on Vista problems, but this problem with ActiveX might simply be a brower setting in IE7.
Check your IE7 Tools - Security Tab - and see what level you are using for Internet. Mine is set Medium-High (I have IE7 on XP). If it's HIGH, it might be excluding ActiveX. You can view the restrictions by selecting the "Custom level..." button. Normally, you should at least get a pop-up or pop-up permission to load an ActiveX control. If that's not happening, my suggestion is probably the most likely reason.
That's at least a starting place.
If you are using any Security software product(s), there might be other reasons or blocks.
Danno
"Life is pain. Anyone who says differently isn't paying eBay and PayPal Seller fees."