Students Faq - general technical problems
Commonly asked questions about the e-learning site
Problem opening / downloading a PDF (reading)
The most common reason for this error is the Browser / Adobe browser plugin (either too new or too old version). The easiest solution is opening an other browser (if you use Firefox, then Chrome or vice versa). This will solve this problem most of the time.
If you still have a problem contact the helpdesk. If nobody can open the reading, contact your professor.