Ubuntu 10.04 Gnome-splashscreen-manager crashes

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http://www.linuxquestions.org – Let me preface this by stating that while I realize that it is no longer maintained and that gnome-art NextGen is available as a substitute ( a repo would nice) I get a crash with gnome-splashscreen-manager 0.2, when adding splash screens. Says unsupported file types. Maybe I am doing this wrong, however any pointers would be appreciated and possible flames for stupidity are welcome, learning should always be fun. So I've tried plain jpegs and pngs with varying degrees of success, but usually they just do not work. Actual Relevant data, minus my charisma is as follows (HowTos)