It's right there in the examples.. but you are smarter. Well at least that is what I thought. For the last 3 days I have been rebuilding ec2 instance after ec2 instance thanks to the following error messages:
kbuildsycoca running...
QGDict::hashKeyString: Invalid null key
QGDict::hashKeyString: Invalid null key
KNotify::playTimeout
KNotify::playTimeout
And you are dead in the water. Nothing works until you stop the process and then you get more information. If you see this behavior the problem is not in the packages or in the code. It is in the way your are calling khtml2png.
Always make sure you are are passing the url with a proper web protocal like http: or https:
Good Example:
khtml2png2 --width 800 --height 600 http://www.kde.org/ kde-org.png
Bad Example:
khtml2png2 --width 800 --height 600 www.kde.org/ kde-org.png
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