What went wrong with my sweetcorn?

twiglet98

I chitted sweetcorn seeds on damp kitchen paper and then set them into loo rolls filled with seed compost, kept in my bedroom. The seedlings have grown to about 5 inches high and in the space of 24 hours they have all flopped over. Too hot, too cold (less likely), too wet, too dry, too light, too dark, too long in the tubes indoors? Is it worth planting them out tomorrow, it's too late to start more seeds now?

I'd be grateful for any ideas! I've grown them successfully like this for the past two years, the year before that the same thing happened and I bought replacement plants.

I_have_spoken

Damping off? http://www.rhs.org.uk/advice/profile?PID=151