Thanks for your message. It appears that JSTOR recently upgraded its interface, and in doing so introduced some new "features". These are presenting themselves in several ways.
If you have a pop-up blocker you will appear to get an error when trying to view the pdf of an article. To resolve this, hold the CTRL key while clicking on the pdf link.
If you are on campus you may be asked to agree to the Terms and Conditions by clicking on a link. Once you accept these conditions you will be ported over to the pdf.
We have notified JSTOR to make sure they understand what users are now experiencing when trying to view a pdf article and we would hope that they will try to make improvements to this functionality.
Don't hesitate to bring any other problems with these resources to our attention.
Answered by: Anne Pottier (Associate University Librarian, Library Services)