Reported by ondrosik on 2013-09-02 16:45
Mixxx is an open-source QT based DJ software. I am doing a private radio show with it in Irregular time. When recent stable, Master or Next branch version of NVDA is loaded, Mixxx crash in various situations, mostly when I try to load file to deck 1 or 2.
When I run Portable nvda 2011.1, everithing works e. g. I did a two hour show yesterday without any issues. When I switch back to current stable version, I can freeze it during few seconds, in better times during 10 minutes.
I took all stable versions and I noticed that the freeze starts in 2013.1.1. E. g. I can use 2012.3.1 without any issue but when Switching to 2013.1.1, Mixxx will soon or later crash. On my system the crash mostly freezes nvda so I have to restart NVDA as well, but in rare cases NVDA woke up after a while.
I can not see nothing related in the mixxx log, but bunch of debug information in the NVDA log (see attached file).
My configuration is Win 7 64-bit, Mixxx 64 or 32 bit (I tryed both with same results). I use QT accessibility lybrary for better mixxx accessibility howewer, when I delete the accessibility lybrary it freezes too (I can do things by memory so when tested I tryed to open two files and play them. This can be done with keyboard without additional assistance).
I can reproduce this also on my old XP machine but recently the mixxx behaves strangely here due to fact that the computer doesn't work good at all so I didn't use the xp old computer for recent testing, but I can if this will be important.

What I need to improve this ticket:
Try old version or current beta version of mixxx, I am currently using version 1.11.1-pre-bzr3881. I remember that I used mixxx 1.9.something earlyer so I can try, what happens when I move to this version
Get experience from other users, I know two people, who can test this. They reported that mixxx crashes sometimes but they didn't tested if old version of NVDA works better.