I just tried switching to 3.x branch (D6) to try to solve an issue where the Chrome browser display is very broken up in 2.x.
I tripped up on the missing Slideshow Singleframe. I did some searches and found it is no longer part of the module. Hence it would make good sense to alter this message in views_slideshow_plugin_style_slideshow.inc
'#markup' => t('There is no Views Slideshow plugin enabled. Go to the !modules and enable a Views Slideshow plugin module. For example Views Slideshow Singleframe.', array('!modules' => l('Modules Page', 'admin/modules'))),
The D7 3.x version still has the same message too.