I'm afraid that is a virus/malware. If it looks anything like this atleast. I've had it and it was a pain to get rid of. As for the main topic I recommend Adblock as I believe (!) it stoppes redirecting links. I've not experienced it atleast.
Mod - Specs - Materials.xml. Look for burn time. If you don't have a Materials.xml in your specs folder you can "steal" one from another mod or find it in your Data - specs folder.
50ms is actually really good. Maybe not if you're on the same physical network. But through Hamachi that is definetly acceptable. Anything under 150 is considered pretty good anything above 250+ is not that good. Unfortunatly I don't have a really good answer to the connection problems you are discribing firefighterguy.
You can always port forward your router, altough if thats the solution, I'm not so sure. Make sure you and you're gaming partner have a stable internet connection.
I can't see the problem here. When you get Server and clients are using different files. The game is clearly telling you that you don't have the excact same files in the mod you've loaded. Then when it tells you, you're using a different modification, you're clearly using a different modification. I'm I missing something here? Please note that the game is pretty picky on stuff like specs and prototypes, you need to have the excact same stuff. Models and Audio is not so important.