Forcing Liquid Viscosity to refresh your connections on a Mac is quite simple. 

1. Close Liquid Viscosity
2. From your Finder menu select GO
3. While holding down the option key (ALT) select Library
4. Open /Preferences/com.sparklabs.vpp.smrhosting.plist in something like the free application Text Wrangler
5. Make the following values Look like they are below (see example screenshot at bottom)

<key>LastSuccessfulVPPConnUpdateCheck</key>
<integer>1</integer>
<key>LastVPPConnUpdateCheck</key>
<integer>1</integer>
<key>VPPConnectionUpdateVersion</key>
<integer>1</integer>

6. Save the file and restart Liquid Viscosity.
7. Open Preferences
8. Click General
9. Click Check for Updates Now
10. Give it a few minutes to update then check your connections. They should have refreshed. If they have not open the file you just modified above and check to see if the <integer>1</integer> has changed.