I understand that this thread is ancient, and the person behind nPDF might not be too keen on updating it. However, I have hope that it's not so.

Just recently ndless has been updated to version 5.2.0 for the latest TI-Nspire software, and I've been having issues regarding nPDF. The problem is that I can not use it, after launching the nPDF.tns file a window pops up, stating, that the various traditional file formats will be supported. However, when attempting to open pdf files, I'm being informed that the file format is not supported.

Anyone else having this issue with the latest ndless? Are there any solutions? Is there any hope for an update?