I have a currently Open ticket (21226747) but wanted to throw this out there to see if anyone else has run into this.  Query Studio is only available in Firefox.  I log in through our SSO to Concur, mouse over reporting and click intelligence.  I receive this error DPR-ERR-2107 The User Capabilities Cache cookie cannot be decoded.  I have to clear my cookies and cache every time I let the intelligence window time out.  It runs just fine in other browsers, it is something Firefox specific.  

I was trying to figure out if it is related to a setting or something maybe that I don't have control over.  I see the clear advantage of putting the query together in Query studio, but at this point I can't even get into cognos/Intelligence to get to the Query Studio.