All my formulas stopped working

I've learning how to use vba and everything seems to be going great till today. I can't get any of my formulas on my documents to work anymore. in order for a formula to work I have to click in the formula bar to get the formula working again. On top of having to do that my formulas aren't refreshing either. Can anyone possibly help me and tell me whats going wrong, did I do something to create this problem?

Thanks
Elocin_rae