The SalesForce connection profile uses http in it's default URL which causes the following error when creating a connection profile:

java.lang.Exception: com.sforce.soap.partner.UnexpectedErrorFault: UNSUPPORTED_CLIENT: HTTPS Required
at com.metamatrix.modeler.modelgenerator.salesforce.connection.impl.Connection.login(Connection.java:82)
at org.teiid.designer.datatools.salesforce.SalesForceConnection.<init>(SalesForceConnection.java:48)
at org.teiid.designer.datatools.salesforce.ConnectionFactory.createConnection(ConnectionFactory.java:11)
at org.eclipse.datatools.connectivity.internal.ConnectionFactoryProvider.createConnection(ConnectionFactoryProvider.java:83)
at org.eclipse.datatools.connectivity.internal.ConnectionProfile.createConnection(ConnectionProfile.java:360)
at org.teiid.designer.datatools.salesforce.ui.SalesForceProfileDetailsWizardPage$SalesforcePingJob.createTestConnection(SalesForceProfileDetailsWizardPage.java:405)
at org.teiid.designer.datatools.salesforce.ui.SalesForceProfileDetailsWizardPage$SalesforcePingJob.run(SalesForceProfileDetailsWizardPage.java:392)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: com.sforce.soap.partner.UnexpectedErrorFault: UNSUPPORTED_CLIENT: HTTPS Required
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:130)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:108)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:78)
at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(SEIStub.java:107)
at $Proxy36.login(Unknown Source)
at com.metamatrix.modeler.modelgenerator.salesforce.connection.impl.Connection.login(Connection.java:73)
... 7 more

Overriding with the ssl version of the URL gets around this issue.