SSRS Report in Web App clearing out Session variables?

We're using a SSRS report with URL links that's being displayed in our web application. When we click on a link in the report, it should take you to a page within the web app. However, when we click on the link (link created using SSRS Action property), it appears to be clearing out the session variables. The web app gives the error that we are "no longer logged in".

Any ideas as to how to go about fixing or debugging? Thanks in 开发者_高级运维advance!

---

Assuming that they are on different servers:
http://blogs.msdn.com/b/knowledgecast/archive/2007/01/31/the-double-hop-problem.aspx