I've tried getting both 2.5.5.0 and 2.6.0.0 to work, 32-bit and 64-bit, and not one will. I have allowed port 6346, both in Comodo firewall and forwarded through my Ubee DDW3610. All connection tests work. The programs both connected to the networks just fine. I can search just fine, as well. But when I try to download something, the program freezes and will not come undone. Also, I can't connect to the Chat.
I have gone through the forums and bug reports. While there are many suggestions there, none seem to work in my case.
I am running Windows 7 64-bit. I have Comodo's free firewall and Avast A/V running. My download speed is 30Mb, with 5 Mb upstream. The program produces no error message at all when it freezes. I would have included those files if they were available.
Please, if you require any other information at all, write back and I will answer with any I have access to.