Hi. I am totally new to YahooPipes and the coding involved. Now your iop issue. With other iop journals I have experienced the same problem, the RSS does not return anything although if I put it directly in my bookmarks in Firefox the feed shows correctly. Sometimes I try again running the pipe and the iop server seems to respond and I get no errors, and in both cases I use Fetch Feed module. I did try the solution previous poster suggested using the "select *" command and the YQL module and results change but intermittently, that is using Fetch Feed or YQL does not solve the iop problem for good. Since I don't know much about this YQL or more sophisticated coding, for now, I think it may well be just an iop server problem that sometimes show and sometimes it doesn't.