The Embedded Development Kit is unable to automatically set the Base Address of the AVB software driver.
This is a result of an error in the software driver support file data/avb_v2_02_a.tcl.
This can be fixed by editing the file and swapping the string C_BASEADDR for C_MEM0_BASEADDR on lines 53, 54 and 56 of data/avb_v2_02_a.tcl.
This issue has also been resolved in the version 2.2 Rev 1 patch. For the patch and download instructions, see:
(Xilinx Answer 33305) LogiCORE IP Ethernet AVB Endpoint v2.2 - Release Notes and Known Issues for ISE 11.3 software