KNFBReader for IOS - tricky crash on multi pages PDF documents

iOS and iPadOS

Hi there,
may anyone of the KNFBReader users here confirm the following?

Lets take a multi page PDF document and import it to KNFBReader taht contains e.g. 74 pages after it is converted by any reader with PDF capability. That should happen without any problems. So lets put than on the OCR recognition process. The first - lets say - 20 pages seems to be processed correctly. After two or three pages later, it comes to an aprupt crash down. The app stops and you lands on the homescreen from that KNFBReader had been started.

Martin Kirchner



Submitted by Devin Prater on Sunday, September 28, 2014

Before you do a scan, try quitting all other apps, and maybe even quit and reopen knfb. As an ex-user of read2go, I'm very familiar with this process.

Submitted by Martin Kirchner on Sunday, September 28, 2014

Good idea, but unfortunately no solution specifically for that bug. I've tryed it, but the crash occures, no matter what I do.

Submitted by Edward Alonzo on Sunday, September 28, 2014

I to have had this probme. with my css from my phone company. about the first few pages, it finishes, and then it crashes.

Submitted by Alan on Monday, September 29, 2014

I tried to inport and recognice a 120 pages document yesterday and the app crashed on page 24 or so without saving any text .

Submitted by alex wallis on Monday, September 29, 2014

sounds like maybe its something to do with formatting or something else causing the issue then or maybe the bug doesn't happen all the time.

Submitted by Martin Kirchner on Monday, September 29, 2014

In reply to by jrjolley (not verified)

May I ask you what IOS version you've used as you've converted that large PdF successfully?

They are a bit like daisy books in that they can be badly marked up and things. Perhaps KNFB reader need to be more explanatory about what works and what doesn't. The PDF I used was a users guide and it was scanned images.

I would not rely o that. You have your profs that do a scanned image for a pdf that have badly written things by hand. I should know. Also you have your profs or students or sightlings who just don't care and want to get as much on th epage so do like 8 or 6 point font to get as much on to 1 clutered page as possible, so rules are pretty much a moot point here.