Webdeploy System.Runtime.Serialization.SerializationException: Member 'ClassName' was not found - visual-studio

Question

When im doing a webdeploy at visual studio 2012 and select the option update database I get the following error at my server log:
User:
Client IP: xxxx
Content-Type: application/msdeploy
Version: 9.0.0.0
MSDeploy.VersionMin: 7.1.600.0
MSDeploy.VersionMax: 9.0.1631.0
MSDeploy.Method: Sync
MSDeploy.RequestId: 36abe7a7-87e3-4ffb-a46f-b5918da1e651
MSDeploy.RequestCulture: nl-NL
MSDeploy.RequestUICulture: en-US
ServerVersion: 9.0.1631.0
Skip: objectName="^configProtectedData$"
Provider: auto, Path:
A tracing deployment agent exception occurred that was propagated to the client. Request ID '36abe7a7-87e3-4ffb-a46f-b5918da1e651'. Request Timestamp: '1-10-2012 17:39:41'. Error Details:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Runtime.Serialization.SerializationException: Member 'ClassName' was not found.
at System.Runtime.Serialization.SerializationInfo.GetElement(String name, Type& foundType)
at System.Runtime.Serialization.SerializationInfo.GetString(String name)
at System.Exception..ctor(SerializationInfo info, StreamingContext context)
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle._SerializationInvoke(Object target, SignatureStruct& declaringTypeSig, SerializationInfo info, StreamingContext context)
at System.Runtime.Serialization.ObjectManager.CompleteISerializableObject(Object obj, SerializationInfo info, StreamingContext context)
at System.Runtime.Serialization.ObjectManager.FixupSpecialObject(ObjectHolder holder)
at System.Runtime.Serialization.ObjectManager.DoFixups()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, IMethodCallMessage methodCallMessage)
at Microsoft.Web.Deployment.Base64EncodingHelper.DeserializeHelper(BinaryFormatter formatter, Byte[] buffer)
at Microsoft.Web.Deployment.Base64EncodingHelper.Deserialize(String str, Exception& handledException)
at Microsoft.Web.Deployment.SerializationHelper.Deserialize(String str)
at Microsoft.Web.Deployment.SqlDacPacProvider.ProcessExeOutput()
at Microsoft.Web.Deployment.SqlDacPacProvider.RunExecutableAsync(String exeName, String arguments, Int32 waitInterval, Int32 retryAttempts)
at Microsoft.Web.Deployment.SqlDacPacProvider.Add(DeploymentObject source, Boolean whatIf)
at Microsoft.Web.Deployment.DeploymentObject.Add(DeploymentObject source, DeploymentSyncContext syncContext)
at Microsoft.Web.Deployment.DeploymentSyncContext.HandleAdd(DeploymentObject destObject, DeploymentObject sourceObject)
at Microsoft.Web.Deployment.DeploymentSyncContext.SyncChildren(DeploymentObject dest, DeploymentObject source)
at Microsoft.Web.Deployment.DeploymentSyncContext.SyncChildrenOrder(DeploymentObject dest, DeploymentObject source)
at Microsoft.Web.Deployment.DeploymentSyncContext.ProcessSync(DeploymentObject destinationObject, DeploymentObject sourceObject)
at Microsoft.Web.Deployment.DeploymentObject.SyncToInternal(DeploymentObject destObject, DeploymentSyncOptions syncOptions, PayloadTable payloadTable, ContentRootTable contentRootTable, Nullable`1 syncPassId)
at Microsoft.Web.Deployment.DeploymentAgent.HandleSync(DeploymentAgentAsyncData asyncData, Nullable`1 passId)
at Microsoft.Web.Deployment.DeploymentAgent.HandleRequestWorker(DeploymentAgentAsyncData asyncData)
at Microsoft.Web.Deployment.DeploymentAgent.HandleRequest(DeploymentAgentAsyncData asyncData)
What might be causing this issue?
The error Visual studio gives me is:
Error 2 Web deployment task failed. ((1-10-2012 18:54:34) An error occurred when the request was processed on the remote computer.)
(1-10-2012 18:54:34) An error occurred when the request was processed on the remote computer.
The server experienced an issue processing the request. Contact the server administrator for more information. 0 0 Database
--FIX--
For some reason my installation of Webdeploy 3 did not work well (tried reinstalling too) with ms authentication, created a sql auth connectionstring and it resolved the issue.