Synfig
Synfig Studio is an open source 2D vector animation program. It is available from http://synfig.org/. It uses the NSIS installer.
<packages>
<package
id="Synfig"
name="Synfig Studio"
revision="%version%"
reboot="false"
priority="20">
<variable name="version" value="0.64.0" />
<check type="uninstall" condition="exists" path="Synfig Studio" />
<install cmd='"%SOFTWARE%\Synfig\synfigstudio-%version%.exe" /S ' />
<upgrade include="install" />
<remove cmd='"%PROGRAMFILES%\Synfig\uninstall-synfigstudio.exe" /S ' >
<exit code="1" />
</remove>
</package>
</packages>