Here is my resources.xml that I use to setup a sprite:

Code:
<?xml version="1.0" encoding="iso-8859-1"?>
<resources>

	
	<sprite name="bomb" base_angle="0">
		
		<translation origin="center" y="5"/>
		<rotation origin="center" y="5"/>
		<animation pingpong="no" loop="true" speed="50"/>
		<image file="Resources/bomb.png" />
		<image file="Resources/bomb-1.png" />
		<image file="Resources/bomb-2.png" />
		<image file="Resources/bomb-3.png" />
		<image file="Resources/bomb-4.png" />
		<image file="Resources/bomb-5.png" />
		<image file="Resources/bomb-6.png" />
		<image file="Resources/bomb-7.png" />
		<image file="Resources/bomb-8.png" />
		<image file="Resources/bomb-9.png" />
		
		<frame nr="1" speed="11400" x="-4" y="0" />
		<frame nr="2" y="1" x="-6" speed="100"/>
		<frame nr="3" y="3" x="-7" speed="400"/>
		<frame nr="4" y="4" x="-8" speed="300"/>
		<frame nr="5" y="4" x="-8" speed="150"/>
		<frame nr="6" y="6" x="-8" speed="150"/>
		<frame nr="7" y="7" x="-8" speed="150"/>
		<frame nr="8" y="8" x="-8" speed="150"/>
		<frame nr="9" y="6" x="-7" speed="50"/>
		
		<translation origin="center" y="5"/>
		<rotation origin="center" y="5"/>
		<animation pingpong="no" loop="true" speed="50"/>
	</sprite>

	
</resources>
It seems that the default value speed="50" never gets overridden.

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Edit:

The following file works:

Code:
<?xml version="1.0" encoding="iso-8859-1"?>
<resources>

	
	<sprite name="bomb" base_angle="0">
		<image file="Resources/bomb.png" />
		<image file="Resources/bomb-1.png" />
		<image file="Resources/bomb-2.png" />
		<image file="Resources/bomb-3.png" />
		<image file="Resources/bomb-4.png" />
		<image file="Resources/bomb-5.png" />
		<image file="Resources/bomb-6.png" />
		<image file="Resources/bomb-7.png" />
		<image file="Resources/bomb-8.png" />
		<image file="Resources/bomb-9.png" />
		
		<frame nr="1" speed="11400" x="-4" y="0" />
		<frame nr="2" y="1" x="-6" speed="100"/>
		<frame nr="3" y="3" x="-7" speed="400"/>
		<frame nr="4" y="4" x="-8" speed="300"/>
		<frame nr="5" y="4" x="-8" speed="150"/>
		<frame nr="6" y="6" x="-8" speed="150"/>
		<frame nr="7" y="7" x="-8" speed="150"/>
		<frame nr="8" y="8" x="-8" speed="150"/>
		<frame nr="9" y="6" x="-7" speed="50"/>

		<translation origin="center" y="5"/>
		<rotation origin="center" y="5"/>
		<animation pingpong="no" loop="true" speed="50"/>

	</sprite>

	
</resources>
But I still can't figure out how to make the animation loop? setting the attribute loop="true" doesn't work