Plasma widget error - "could not create a python scriptengine"

In Kubuntu 10.04, Adding widgets may give webkit and scriptengine errors. Here are some of the solutions.

"could not create a python scriptengine"
When installing Solar System widget to desktop, that error appears. Solution is to install plasma-scriptengine-python, e.g. at the terminal (CLI) type;

sudo apt-get install plasma-scriptengine-python

"could not create a webkit scriptengine for the scripted image widget"
When installing Scripted Image widget to desktop, above error appears. Solution, install plasma-scriptengine-webkit. E.g. at CLI type;

sudo apt-get install plasma-scriptengine-webkit

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