All versions of Crystal supported my FIMS in the viewer are hard to purchase licenses for as they are all obsolete by Crystal. The last version supported is Crystal Xi (or Crystal 11). Crystal Reports versions released since thenare Xi R2, 2008, 2011 and 2013. 

Please add support for using Crystal Reports 2013 (current version)  as a viewer version option so that the foundations who do build in Crystal can use a version of Crystal Reports that is supported by SAP.