You only just posted your questions yesterday. Forums don't have instant response time. That said, I don't have an answer for you myself. I don't really do nspire stuff. Does the program come with instructions? Do you perhaps need to convert the PDF using an included tool before sending it over?

*Edit* I read through the original topic and it seems that all you need to do is rename it. Just add a .tns to the end of the pdf file and send it over. If it isn't working with TI's provided linking software, maybe try using third party linking software.

Yeah I tried adding the .tns to the end of the file. However it would just automatically change it back to "name.pdf.tns.pdf". In other words it automatically adds the .pdf at the end when I try moving the file from my PC to Calculator. It's so frustrating.

Edit: I figured it out. I just had to go to Control Panel, Appearance and Personalization, File Explorer option, then show the extensions from there on the view tab. After that I was able to rename .tns and that would change the file so my calculator would accept it. Thank you guys for the responses!

Glad you were able to get it working Saigon2D.