When did you try these downloads? At the time you tried the downloads, we may have been experiencing some network issues. I just tested the download (01/17/2012 at 1:40PM EST) of this file and it came down without any issue. You may want to give it another try.
Regardless, as the file is quite large (23MB), I've placed the reference design on the Avnet File Transfer Server. You can use the following link to download the Getting Started Reference Design:
The following file has been made available for you to download from Avnet's File Transfer web site:
http://xfer.avnet.com/uploads/virtex6dsp_getting_started_reference_design_12_3_0.zip
Click on the hyperlink or enter this URL into your web browser to retrieve the file.
This file will remain on the server for approximately 5 days from the date of the upload at which time it will be deleted. Please be sure to download it before the expiration time.
This file will expire on Jan 22, 2012.
File Size: 22.83 MB
In addition, I've attached to this post, the 12.4 Getting Started Reference Design User Guide (GS-AES-V6DSP2-LX240T-G-12_4.pdf). You may want to try the 12.4 or 13.1 reference designs.
B/r,
Russ
