Is it possible that someone in your company has a WebI Rich Client of a higher version (BO XI 3.1) than what you use and the report was built there? Or maybe the report built someone from outside of the company that uses a higher BO version?
Your base Webi reports are showing as too new, but newly created are OK? That would make me suspicious of something changing on your deployment… Besides redeploying that war, what else has happened lately??
What version do you have installed? If you look at your version via the CMC, do you get an answer that surprises you?
The issue is resolved the solution was to create a new string in BO registry pointing to the win32x86.
SDN Thread: http://forums.sdn.sap.com/thread.jspa?threadID=2020182
SAP Note: 1297881 - The document requires WebIntelligence 12.1.0.0 and cannot be opened by the current WebIntelligence version 12.0.0 WIS 30674 (Error INF) when opening a WebIntelligence document in Business Objects XI 3.1