Empty agarose gel after electrophoresis - (Oct/16/2011 )

Hi guys!,

I was wondering if you could help me to figure out what is wrong. I ran a gel on Friday afternoon for 40 minutes- 100V, stained it using ethidium bromide for 10 minutes and when I check the gel it was EMPTY:( I couldn't even see the ladder. The gel was 1%. What do you think happened??

Help!

Thanks!

Ran the gel backwards? Used water to make the gel instead of buffer? Missing loading buffer so you DNA floated out of the wells?