Aras 12 - Value cannot be null.

I installed a new version of Aras 12 on a brand new server. I get the following error anytime I try to add something. (ex: create a new part)

Value cannot be null. Parameter name: methodType

-<SOAP-ENV:Envelope>
-<SOAP-ENV:Body>
-<SOAP-ENV:Fault>
 <faultcode>SOAP-ENV:Server</faultcode>
 <faultstring>Value cannot be null. Parameter name: methodType</faultstring>
-<detail>
 <af:legacy_detail>Value cannot be null. Parameter name: methodType</af:legacy_detail>
 <af:exception message =" Value cannot be null. Parameter name: methodType " type =" System.ArgumentNullException " />
 </detail>
 </SOAP-ENV:Fault>
 </SOAP-ENV:Body>
 </SOAP-ENV:Envelope>