The trading software ingested informational alerts on different cryptocurrencies from an API I'd subscribed to. I was never a big believer in any alt-coins....but I was super interesting in day-trading them as a way of acquiring MORE BITCOIN.
My webhost updated the version of PHP they use, and everytime I tried to update an entry, I'd get a crazy PHP error. I had to dig into the content-management code I wrote back in 2002 that powers this site. It's a strange experience to have difficulty understanding code that you know you wrote!