We beleive we have found a fix for the problem some users are having with Outlook 2010 SP1. This fix will be included in the next release (today/tommoro) but here is a workaround guide.

1. Close Outlook
2. Open the Registry Editor (type regedit into the run promp)
3. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\Opacus.OutlookAddIn
4. Edit the "Manifest" property and add "file:///" to the begining of the value so it should read something like "file:///C:\Program Files (x86)\Opacus Solutions\Opacus SugarCRM Plugin\Opacus SugarCRM AddIn.vsto|vstolocal"
5.Press ok and close regedit.
6. Open outlook and attempt to connect.

Please let us know if this helps you.