Kaspersky broke my Hamachi

[Fetchez la vache]

Hi,
I use hamachi for work and hence it's something of an issue that it's been broken by installing Kaspersky Internet Security 7.

I can still see other machines on the hamachi network but the connection are all relayed / slow / show up as blue dots which basically means it does not work, and I cannot connect to the network.

If anyone has any ideas please help. So far support have been silent other than an email to confirm my license number, and this was last Wednesday that I asked them ! I'll have to get a refund (hopefully!) if no-one can help.

Cheers,
Fetchez