hmm, difficult to tell what's going on there. Wait for the download to commence, if LimeWire is still at 0% when the download started and LimeWire did not create new files in your incomplete directory for it, then you have found another bug.

It's currently not possible to resume an incomplete file that LimeWire lost, - not without editing the source code anyway. I've encountered similar problems a couple of times, even though they probably were not related to your problem and everytime I had to hack LimeWire to recover the download.