I see you are using 5.5.16. Unfortunately that version will most likely not work these days. Nothing above 5.5.10 except 5.6 will work now. But I also see you posted in the LimeWire Pirate Edition thread so obviously you realised this and tried to use LPE 5.6 instead.

(As far as I know, there were no actual improvements to LimeWire after 5.5.9 or 5.5.10. All later versions were related to their limeshop and auto-update technology. At least the LimeWire Pirate Edition (LPE) version which was based on the 5.6 beta has some additions the regular version did not have.)