Emailed Razer support, got this back from them:
- Uninstall Synapse 2.0
- Reboot
- Uninstall .Net Framework 4
- Reboot
- Run Microsoft Updates and apply all available updates for your operating
system, rebooting when prompted (This may take some time)
- Install .Net Framework 4 -Standalone from the following links
(
http://www.microsoft.com/download/en/details.aspx?id=17718)
- Reboot
- Reinstall Synapse 2.0
- Reconnect
I'm having this issue on a totally clean Windows 7 install (1 day old), I should've installed Synapse before the wipe to see if it occurred then, but too late now. This problem is really widespread from what I can tell from Google-ing, so I doubt reinstalling .Net 4 and keeping your PC updated is going to fix it. I'm surprised Razer hasn't acknowledged this issue yet or even fixed it in a new Synapse release.