Hey all,
I also had the 12% problem. im running vista and havent had a problem with it til now,
i upgraded to LW 4.14.10 a couple of weeks ago and also around the same time time java. apon coming back to LW a couple of days later it wouldnt start.not knowing what caused it doesnt help. it just stalls at 12% start up.
uninstal -reinstall change this change that ..... nightmare....
Coffeennicotine's solution worked perfectly. so thank you coffeennicotine.
If anyone else has this problem give this a go before deleting anything....

Cheers all
Probie