SoulseekQt, The Registry, and mIRC

I hope someone out there can help me as I find myself in a rather unique situation. After many years of being absent from IRC, I set up my file server again using an older version of IRC, 6.35. Everything was going smoothly until I started using SoulseekQT, and about 50% of the time when Soulseek was connected, my DCCs on mIRC wouldn't work. Now they have quit working altogether. I've tried all combinations, uninstalling and reinstalling both in different orders, different versions of mIRC, deleting all the registry keys for each, and so on. THe most common issue with mIRC seems to be a problem with the IP look up and restriction of firewalls and antivirus software. There's never been an IP problem and I've tried every combination of turning the firewall and antivirus off as well as fiddling with port forward on the router, antivirus, and Windows firewall. NONE of this is the issue, so it's got to be something that Soulseek has done in the registry. Even though I thought I had all the Soulseek registry keys deleted, clearly I missed something because when I downloaded Soulseek to reinstall it, my preferences, username, etc. all remained unchanged and present.

Any and all help is appreciated, even if someone can just give me a list of all the Soulseek and/or mIRC registry keys so that I may try deleting ALL of them once again.

Thanks,

P.