Hello I'm not sure what is going on with the SUU you are creating. I would suggest that you use the 32 bit DUP to perform the update if you are encountering issues with the SUU:  <ADMIN NOTE: Broken link has been removed from this post by Dell>   If you want help with the SUU then post more information about the versions of iDRAC, LCC, and packages within DRM. Thanks
Win2k12 R2 is not listed in supported OS list (OS Driver pack 6.4.0.17). I created SUU with Dell Repository Manager 2.0.0.187 to install latest Driver Pack. I get "catlog file not found" errors when i try to upgrade OS Pack. Please help.  
Win2k12 R2 on R610