Couple thoughts? Did you try the Stratix V example design in Qsys? take a look at the 14.0/ip/altera/altera_pcie/altera_pcie_hip_256_avmm/example_design/sv. Arria 5 GZ is very similar to SV so if you can successful compile the SV design in Qsys, you should be able to modify that project over to Arria V GZ. I just compiled that qsys file in a new project with Stratix V in 14.0 and it worked fine. I don't have Arria 5 GZ installed so I didn't complete the last few steps. I know, the docs aren't very clear but the new DMA ref design in 14.0 is now in the IP folder, under example designs.