Sorry...I'm a bit confused. If you're having connecting problems, then I assume you're able to open LW? But if the .exe's missing, how are you opening LW??

How long ago did you buy Pro? If you bought less than 6 months ago (LW have very recently introduced a 1 year deal for Pro) & paid Limewire LLC for Pro then you should still be able to download a Pro installer. Did you save the link to your Pro personal download page? If so, just follow that. If you haven't saved the link then go here & enter the email address that you used to buy Pro.
Lime Wire » Support

If you bought from a scam site or bought longer than 6 months ago then you'll have to pay again for a Pro installer. If you paid for the basic version then you were scammed...basic is free & can be downloaded from
Lime Wire » Official Website & Free Download, BitTorrent «