Currently, if you select a folder with multiple polls in it to create a report from, if one of them was set to record answers anonymously, the report creation simply fails and tells you that it couldn't do it because there was an anonymous poll. It would make a lot more sense for it to ignore the anonymous poll and succeed in creating a report from the others (and provide a warning message that it didn't include the anonymous polls). Currently, the only work-around is to go into the folder and select each non-anonymous poll by hand. You can't even use the 'select all' tick-box at the top, because it also selects the anonymous poll, which one cannot then untick manually. (That's a second issue that needs to be fixed.)