I’ve been having trouble getting Evolus Pencil to generate PNG files ever since I started using Ubuntu 12.04. I thought it was Ubuntu that was the problem. Turns out it was my copy of Firefox. Evolus Pencil doesn’t play well with Firefox18. The answer was to download xulrunner.
You can get the xulrunner here xulrunner-16.0.2.en-US.linux-x86_64.tar.bz2. Version 16.0.2 should be safe.
After you’ve downloaded the xulrunner archive, explode that into the /opt folder. Using your favorite text editor, open
/usr/bin/pencil and change
/opt/xulrunner/xulrunner. That should solve the problem.
It took me some time to find this solution. But I do hope the people behind Evolus Pencil come around to fixing this bug.