Changing view's model crashes at some point

[Pheelbert]

Lets say I have a bunch of tabs and on tab index changed I change the model of a TreeView for the corresponding on in a map I have made in C++.

What I have described works great, the issue is that after a little time switching around the tabs it crashes with this error: http://pastebin.com/m7j3b8NG

Thank you for your help.

[Pheelbert]

Nevermind I found a solution:

QQmlApplicationEngine::setObjectOwnership(MY_OBJECT*, QQmlApplicationEngine::CppOwnership);

It's important to set this whenever returning a pointer in a Q_INVOKABLE function or else it might get garbage collected apparently.