Thanks for the reply and sorry for the confusion.   I've obviously posted this in the wrong place.  I've actually since found a work around which is probably the proper way to do what I wanted in the first place.  It doesn't involve the Selectable.php adapter.  I am now using DoctrineORMModule\Paginator\Adapter\DoctrinePaginator  and Doctrine\ORM\Tools\Pagination\Paginator in conjunction and they seem to work fine.  But to be a little clearer, Selectable.php is not included in the latest Doctrine 2.4 release.  Shouldn't it be found at: DoctrineModule/Paginator/Adapter/Selectable.php ?  The only file in that folder is Collection.php.  Again, I've used Composer and direct zip download.  

I may have my versions all messed up here and thats probably why I can't find the file.  Regardless, I thank you for your time and apologize for the misplaced comments and resulting confusion.