Ahh Image may be NSFW.
Clik here to view.
Actually they are removing the projects from code exchange from Aug 31st but I don't know why you are not able to download files.
Below is the mail related to removing the projects from code exchange.
Dear Code Exchange Project Owners:
After providing you with a channel for sharing your projects on Code Exchange since October 2010, we regret to inform you that Code Exchange will be closing. The last day of the SAP managed forge will be August 31st 2013. We urge you to retrieve all relevant project files from Code Exchange before it closes.
Note, the Code Exchange Terms of Use do not provide the rights to share code outside of Code Exchange. We are actively investigating the possibility of extending the existing licensing model for HANA, SMP, etc. to other technologies that would allow the sharing of code on public forges, and in certain cases commercialize that code. This community space on SCN will remain available for all those interested in promoting their code.
Please let us know if you need help in retrieving your project files from Code Exchange by sending an email to devcenter@sap.com .
- Midhun VP