Multiplicity is, without a doubt, the single best program for Windows I have found!  However, Windows 7/8 Firewall rules can sometimes keep it from working correctly, especially if you're upgrading from Version 1.26 to Version 2.

So, before getting all bothered and worried, go to Windows Control Panel and check the Firewall Rules.

Here's how I fixed cut and paste not working on my system:

The problem has to do with Windows Firewall rules and installation of previous versions of Multiplicity where the "install over" did not remove old FW rules.  Do this for each system.

1) Uninstall Multiplicity, then

2) Go to Control Panel ---> Windows Firewall ---> Advanced Settings ---> Inbound rules

3) Delete all Stardock.... and Multiplicity rules

5) Re-install Multiplicity.

Worked for me. 

For other problems, make sure that the inbound and outbound rules for both Multiplicity and Stardock entries are set to Allow on ALL systems that will be using Multiplicity.   NOTE: There will be multiple rules for the different ports used like drag-and-drop, etc.

Hope this helps you.

Ralph

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