TFTP timeout

Hi,

I was rolling along transferring my licenses from my desktop to the switch using 3com. I transferred two and then all of a sudden, I got this error:

co-3bi11-asn11a#  copy  tftp://172.17.9.249/MDS201309180704311050.lic bootflash:MDS201309180704311050.lic
Trying to connect to tftp server......
Connection to server Established. Copying Started.....

TFTP get operation failed:Connection timed out

Since I had completed one switch already, and was doing the 2nd one, what would cause this?

Thanks!

Admingirl