Cannot Completed download, and media problem

Hi guys, i had a look on the forum but couldn't find anything to match my problem.

Limewire was running fine but stopped one day after i had made no changes to any of my computer software or internet options (firewalls, routers antivirus etc). The problem it had was that it was trying to load up the audio protocol. I figured i'd try re-installing limewire to see if that helped.

I'm not sure if it ever did as i no longer even get that far. Limewire now loads up and tells me that it is unable to complete the previous downloads that weren't completed. Strange seeing as i removed all the limewire files i could find from the computer. The problem is that i can't close the box that tells me this. I tried clicking on the x button on top corner whch does nothing and the "ok" is similarly unresponsive.

Any ideas where limewire has stored the data that tells it it was mid download? And any advice as to the original problem?