This seems to work for other people so I figure it may be a setup problem...
I can add the WSS 3.0 webp parts for reporting services, Report Explorer and Report Viewer and I can get them to work separately, but as soon as I try to connect them together, I get an "unexpected error". Any suggestions

Cannot connect Report Explorer and Report Viewer
Saishyam
Having the same problem.
Posted it here, no response, on the newsgroups is posted also and there i got this ...
https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx FeedbackI
D=240245Still no solution but .....
ChrisDurbin
A good reference for you guys..I am having the same problem and still looking for a solution.
http://www.microsoft.com/technet/prodtechnol/sql/2000/maintain/webrssp2.mspx
<Connecting the explorer and viewer> part.
tm9t9
IamHuM
Already fixed. Try this
1. Go to the web.config and
2. Change the trust level from WSS_Minimal to WSS_Medium
3. iisreset