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wf-section is old module, works very well with XOOPS 2.0.7.3, after 2.0.9 I've saw some incompatilities. Try to change the folder permissions (for the images) to 777 and the files to 666, if this not work, replace it with SmartSection. SmartSection works fine with everyone XOOPS from 2.0.7 to 2.0.13.
SmartFactory modules -
http://smartfactory.ca
May The Source Be With You!