Hello everyone. Sorry to revive an old thread but I need help. I have an nspire cx with ndless 4.4.0 (i upgraded my cx to a cx cas). I'm completely lost on how to download nPDF. I don't have anything installes except for ndless and the cx cas software. Can someone post a step by step run through on how to download it. I downloaded the nPDF.tns file and I ran it in my calculator, but when I try to upload a document from my computer it doesn't even go to the calculator. Again, I would really appreciate it if someone would post a step by step runthrough on how to install and run nPDF.

Thanks!