Oops. Can't help but laugh at this! Picked the wrong client once. Ignored the warning signs. Ignored the bitter cries from my assistant telling me that I'm getting myself into a world of pain after spending five minutes with the couple. The shoot came out, well, reasonably okay by my standards but didn't quite have the spark I was hoping to deliver. Having the bride storm off mid-shoot didn't help and then my assistant getting upset because the wedding couple forgot to put us on a table at the reception and we were starving... Couple got upset that we didn't deliver the shots the bride wanted and didn't pay the full amount. It didn't help that she didn't stick around for the shots we wanted... but hey. It could have been a lot, lot worse for us and it just wasn't worth wasting time and energy after all was said and done. Strangely enough I still get referrals from their friends?! Beats me! Non-professional whoopsies include leaving the memory cards at home and on more than one occasion, leaving the battery on the charger and none in the camera. And leaving the charger at home when I spent two and a half weeks in San Diego. I usually cover this stuff in my equipment check-list before I leave with any moderate intention to bring home some images.