1. I opened a folder in Dolphin. The folder contained .png files and .txt files. 
 2. I opened a .png file using Gwenview to look at a picture. 
 3. With Gwenview still displaying the PNG image, I want back to Dolphin. 
 4. I changed directory to the next level up. 
 5. I renamed the folder containing the .png and .txt files. 
 6. Gwenview crashed. (It does not happen when editing the TXT files.)

Reproducible: Always

Steps to Reproduce:
1. Open a folder containing a PNG file
2. Open the PNG file with Gwenview
3. Rename the folder ==> Gwenview crashes

Actual Results:  
Gwenview's image viewing window closed and a "Gwenview - The KDE Crash Handler" system window opened. 

Expected Results:  
Perhaps Gwenview could remain on screen, displaying the PNG file.  

It may have occurred in one of these modules: 
x86_64-linux-gnu/libglib-2.0.so.0
 - or - 
x86_64-linux-gnu/libQtCore.so.4

Renaming the directory while the file is open is an unusual activity. I can live with this bug.