I cannot be certain what aspect of your system restore led to this change in behavior, but the Auctiva Uploader (both new and previous versions) relies on Java so I recommend installing the latest version of Java from the following page of the Java website: www.java.com/en/download/
Even if you receive a message indicating that you already have the latest versions of Java installed when stepping through the installation process, it may be a good idea to try reinstalling the Java software when provided with that option.
You could also try recreating your bookmark to the old uploader which is causing your browser to crash by entering http://www.auctiva.com/Aurigma/AurigmaUI.aspx in the “Address” bar on your browser and creating a new shortcut using the “Bookmark this page” option in the “Bookmarks” menu.
On the other hand, the issue of the Auctiva Uploader page being “blank” when accessed through Internet Explorer is likely a result of the Active X control which powers the uploader when used through that browser not being installed any longer as a result of the system restore.
Provided that is the case, you should see a message along the bottom of your Internet Explorer browser when you visit the Auctiva Uploader page that says something to the effect of “This website wants to install the following add-on: 'AuctivaImageUploader' from 'Auctiva Corporation'.” and install the uploader control with the “Install” button next to the prompt.
If you do not see such a prompt, you may want to reload the page a few times using the “Refresh” button on the browser and see whether doing so makes this prompt show up as expected.
If you continue to encounter difficulties of this nature, please feel free to contact our Customer Support team directly from under the “Help” tab within your account and we will be happy to continue working with you on this.