I have copied a few PDF files from Textkit over to my Pocket PC over the past year or so, and while most are perfectly readable, I have had problems with a couple of them, for example the Smyth Greek Grammar. when I try navigating to one of the actual pages in the text I get a big gray square and an error message saying “Unknown Filter” or some such. I do not know enough about PDF files to understand what would be different about that file and, say, the Second Year Latin Reader, which reads just fine. The Clyde Pharr Homeric Greek PDF
gives me the same trouble.
What PDF reader are you using? Many of the newer Textkit books use PDF compression to reduce the file sizes. These take current PDF readers from Adobe to read.
Sorry, I should have mentioned that–Adobe Acrobat Reader 2.0 for Pocket PC. It is the most up to date App for this format, and to my knowledge only runs on Windows Mobile 2003.
I’ve researched this on Adobe’s forums, but most of the people who seem to have this problem encounter it with files they created themselves, and can correct it by saving the file a different way. I don’t have that luxury, unfortunately, with Textkit files.
Perhaps, and this is only a guess, the adaptive compression is goofy things up. If you notice the link to our PDFs many have AR5 in them, just remove that to get to the uncompressed version.
Here’s Smyth for example, and keep in mind this file is massive at around 40 MB.
Smyth now views just fine. Good thing I bought a 1GB memory card!
However, simply removing the “_AR5” is not enough to remove the compression, at least on my end. I tried this with the Clyde Pharr Homeric Greek file and it still reads at 6MB–needless to say it still gives me an “unknown filter” error. Any chance you could decompress that one for us as well?
Funny they would leave this out of the Pocket PC version of the app, seeing as how Pocket PCs have such limited storage to begin with.