This doesn't work at all for me. Am i doing something wrong? Im running ndless 3.6 on a TI Nspire CX CAS w/ OS 3.6. I downloaded the nPDF binary file and dragged nPDF.tns to documents, and ran it. nPDF ran successfully and says that i should be able to open .pdf, .xps, and .cbz files. But when i try to open a pdf file it says file format not supported. The pdf in question im trying this out on is the "TI Nspire cx cas getting started guide". a 1.4mb file. i renamed the pdf extension to tns to get it on the calculator so does that have something to do with it?