Orphius, it's spelled ' Solder', pronounced the same way you've been trying to spell it: SOD~ER
It sounds like (from your first post) that you have solder still in those lpc holes. Those need to be removed before you use the solderless adaptor. Use a soldering iron and a solder sucker to get that crap out, and from the sound of it that may increase your chances of it working.
But yes, even though it is 'solderless', you still have to 'desolder' and get that solder out!