Reported by k_kolev1985 on 2010-11-22 19:26
I've recently installed the new Adobe Reader 10 (aka Adobe Reader X). As soon as I open a PDF document in it (no matter if throughout Windows Explorer or from within Adobe Reader itself) and select the method of reading (if the document is not tagged), a couple of seconds later Adobe Reader 10 crashes. After a few tests I realized that this doesn't happen if the so called "Navigation pane" is not visible (it is toggled with F4). A good example of this scenario can be observed with the tagged PDF manual for iPhone downloadable from the following link:
http://manuals.info.apple.com/en_US/iPhone_iOS4_User_Guide.pdf
In this file there are tags and the dialog witch asks you for the reading mode is not displayed. By default however the "Navigation pane" is displayed on the left side of the Adobe Reader window. I was quick enough to press F4 moments after the document was loaded and Adobe Reader didn't crash. But if I leave it open (the "navigation pane"), seconds later Adobe Reader crashes. But if there are no tags in the document and the "Reading non-tagged document" dialog appears, seconds after I make my choices in this dialog and press ENTER to continue and the dialog for document preparation is closed, Adobe Reader crashes. I've tested this with NVDA 2010.2 and the latest snapshot as of this writing (r3941) and the result is the same as described above. I've managed to test it with another screen reader running (JAWS v11.0) and didn't experienced such crashes from Adobe Reader.
Steps to reproduce:

1. Open a PDF document in Adobe Reader 10. Good examples are:
   http://manuals.info.apple.com/en_US/iPhone_iOS4_User_Guide.pdf - this is a tagged PDF document. Or:
   http://pioneer.ipapercms.dk/Manuals/DEH_2220UB_YRD5303_manual/GetPDF.ashx - this is a non-tagged PDF document. Hope the link works.
2. If the "Reading Untagged Document" dialog appears (in the case of the 2nd file it will) - select "Infer reading order from document (recommended)" from the "Reading Order:" combo box and press ENTER. After this Adobe Reader 10 crashes.
3. If you open the PDF from the 1st link and you do not touch anything, Adobe Reader 10 also crashes. But if you manage to press F4 immediately after opening the PDF from the 1st link and by doing that closing (hiding) the "Navigation pane", it is more likely that Adobe Reader will not crash.
   NOTE: Before I upgraded to Adobe Reader 10, I was using Adobe Reader 9.4.1 also with the latest snapshots of NVDA and didn't experience such problems.