problems installing Slideshow Manager extra

I guys I'm having a little bit of trouble installing Slideshow Manager extra and I was wondering If anyone knows how to get these error messages to go away.

I am using rev 2.2.5-pl
and this is the error message I get when trying to install it

xPDOVehicle resolver failed: type php (/home/onewayme/public_html/core/packages/slideshowmanager-1.1.1-pl/modCategory/ba3e55c4d264b167f77228cb455335a5.setupoptions.resolver.resolver)
Could not resolve vehicle for object of class modCategory; criteria: Array ( [category] => SlideshowManager )

I know it has something to do with Xpdo but I have no idea how to fix this
any help would be great
thanks
Modxnoob