why QAbstractitemmodel error on Qt4.1.1?

[manhds]

My App using Qt4.0.0. This run don't error but I build with Qt4.1.1 or Qt4.1.2 then my App have an error.

"
...
ASSERT: "last >= first" in file kernel\qabstractitemmodel.cpp, line 1792
"
I want insert image on here but i don't understand that.

[wysota]

Show the code.

[Lemming]

I'm experiencing the same assertion message while trying to display the contents of folder using QDirModel/QTreeView. That message wasn't there with QT4.0.0.

Seems to me that there is some bug in QT, but I was unable to create some code snippet which would provide a stable scenario of reproducing this problem. If you can come up with some code snippet that showcases this problem, I will be very grateful.