Poll:What's the worst programming mistake you've made in c2?

I just fixed an error that took me all day to fix and I thought would share my mistake and ask people what they have encountered.

So I was trying to use a loopindex expression in a "For Each x element" event. Not realizing (remembering) there is an Array specific expression which is ".curx"

I spent all day trying to figure out why loopindex kept returning -1

I'm almost surprised it didnt work, but I do realize its not really universal and is made for the system loops.

Anyway, just thought I would share my lapse in intelligence.

looking forward to some interesting stories!

i have lots of programming mistakes so much its impossible to really count.

but i remember once i created a fighting arcade game like maplestory but no multiplayer,

most probably my first game.

the player is a warrior using swords slashing cute enemies that chase after the player,

when player still alive at a certain time interval,

there will be a randomly dropped new sword, which when you pick it,

your player sword changes color and design

and you starts to do more cool attacks (animated one) .

even though the sprites and sounds are mostly edited copyrighted stuffs,

i can redo the game with those new free sprites and sounds available now,

but ooophs i forgot to or was too lazy to put in comments,

now the whole entire game program looks super weird,

i dun even understand most of the programs now.

its sounds impossible to forget what i have done, but it really happened,

and then on, i subconsciously keeps on putting comments until i thinks its a bit of overkill,

there is almost a comment for each of my events.

How do I get the badge "found the princes"?