[Y!M] web messenger not working?

[lil_lady_dreaming_of_you]

 Hello,
I have a small problem, I am moving and right now I am on a computer 
that doesnt have yahoo messenger downloaded, I wanted to use the web 
messenger to keep everyone updated until my computer gets hooked up in 
CA. but it  just gives me a blank page, I turned off pop up blockers, 
even still nothing, Do you know whats wrong? Am I doing something 
wrong, it worked yesterday, but now it won't. Please any info would 
really help. Thank you.
                               Kathy