If you are having a strange problem whereby Views Slideshow only displays an image for the first of your slides in Drupal 7 (perhaps to non-authenticated visitors) try disabling the devel module (if it’s enabled of course!).
This fixed this strange and annoying problem for us…
If you get the following error when using devel’s dvm() in drupal 7 (or indeed, if you see it when not using dvm()):
Notice: Undefined variable: output in drupal_var_export()
Then try putting this line into you settings.php file:
ini_set('error_reporting', 'E_ALL ^ E_NOTICE');
It worked for us – thanks to citytree for the fix!
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