Crash while activating EditFiles command

Qt Creator crashes while activating GenericProjectManager -> EditFiles command.

To reproduce:

1. Create generic project: Ctrl+N, Import Project, Import Existing Project
2. Import some dir with sources (I use it to edit html/js files)
3. Tools->Options->Keyboard, search for "editfiles", assign some shortcut, OK
4. Activate shortcut — QtCreator crashes.

Stacktrace is attached.