vidro3 says: "Now I feel like a jerk asking about something that I know is likely a silly error but I just can't see it." Whenever I need it! I recommend that

vidro3 says: "Now I feel like a jerk asking about something that I know is likely a silly error but I just can't see it." Whenever I need it! I recommend that you phrase it just as you have here, i.e., "I feel foolish asking about this, its probably a silly error, but I just can't see it!" This kind of thing happens to everyone, especially in an environment with interruptions where you cannot concentrate for long periods of time. Just to make it even more interesting sometimes, when you're explaining the problem, you'll suddenly realize the solution too, without anyone else saying a word! Its as if there's a different problem-solving mechanism that is invoked by talking through the problem.