qtcreator crashes when creating new project

Status changed to 'Confirmed' because the bug affects multiple users.

Also exactly the same issue affects Clementine music player. Looks like there are problems in accessibility implementation.

I also have similar problem but the message is:
FIXME: handle dialog start.
Interface is not valid
ASSERT failure in : "Got an update for an invalid inteface. Investigate this.", file atspiadaptor.cpp, line 899
Aborted (core dumped)

Same stuff with qtiplot (Precise, i386). I attempted to choose directory in project save dialog.

FIXME: handle dialog start.
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
Interface is not valid
ASSERT failure in : "Got an update for an invalid inteface. Investigate this.", file atspiadaptor.cpp, line 899
Aborted (core dumped)

I am getting "FIXME: handle dialog start" and "FIXME: handle dialog end" as part of the (debug) console output when running a Qt GUI application I am developing. They seem to appear in pairs and to be benign in that they program behaves as expected and doesn't crash. It looks as though they may simply appear whenever a dialog is opened or closed, but there's no other information to indicate whether there's an issue I should investigate or it's just a bit of stray Qt debugging information.

I recently upgraded to Ubuntu 12.04 and Qt 4.8.0 (Qt Creator 2.4.1) and the message did not appear before the upgrade. I am not using accessibility features, qtiplot, or Clementine music player.

ubuntu 12.04.
the information is:
Got bus address: "unix:abstract=/tmp/dbus-uaVyEBYWT8,guid=a7a74fee66ff410edc5f334a00000030"
Connected to accessibility bus at: "unix:abstract=/tmp/dbus-uaVyEBYWT8,guid=a7a74fee66ff410edc5f334a00000030"
Registered DEC: true
Registered event listener change listener: true
tFIXME: handle dialog start.
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
Interface is not valid
ASSERT failure in : "Got an update for an invalid inteface. Investigate this.", file atspiadaptor.cpp, line 899
Aborted (core dumped)

Yep. I get the same on Ubuntu 12.04.

Got bus address: "unix:abstract=/tmp/dbus-6pEAA8qQmA,guid=0299008312771325ee2f75a100000035"
Connected to accessibility bus at: "unix:abstract=/tmp/dbus-6pEAA8qQmA,guid=0299008312771325ee2f75a100000035"
Registered DEC: true
Registered event listener change listener: true
FIXME: handle dialog start.
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
QSpiAccessible::accessibleEvent not handled: "8008" obj: QObject(0x0) " invalid interface!"
Interface is not valid
ASSERT failure in : "Got an update for an invalid inteface. Investigate this.", file atspiadaptor.cpp, line 899
Aborted (core dumped)

Same thing with Clementine music player! Isn't there a temporary fix available? I didn't have this problem from the start. Not sure when i got it. In the beginning with U 12.04 everything was working fine.

Anytime i press 5th or lower folder in folder view it closes and gives the same error everytime on command line.

CLI output:

13:49:02.513 DEBUG unknown Interface is not valid
13:49:02.514 ERROR unknown ASSERT failure in : "Got an update for an invalid inteface. Investigate this.", file atspiadaptor.cpp, line 899
Aborted (core dumped)

According to :
http://code.google.com/p/clementine-player/issues/detail?id=1706
Removing the qt-at-spi package solves the problems (it actually did, for me!)
sudo apt-get remove qt-at-spi

sudo apt-get remove qt-at-spi

work for me too

It seems this bug is a duplicate of bug #998012 (librecad, qtiplot (among others) crash with "ASSERT failure in : "Got an update for an invalid inteface. Investigate this.", file atspiadaptor.cpp) and bug #946956 (lyx crashes in open/save file dialog)
QGIS (and other QT applications) crash bugs can be solved by simply removing qt-at-spi package 0.2.0+git20120411-0ubuntu1 (from Ubuntu 12.04 LTS)!

removing qt-at-spi worked for me as well (ubuntu 12.04 i386)

We moved on to QtC3, please check if the bug still happens on 14.04 and reopen the bug report if it does