Error in HL7 send pipeline.

Hi,

we are trying to create a HL7 message. The orchestration builds the
complete 
ORU^01 (v2.4) message with his 3 parts, but we have an error once it is 
processed by the HL7 send pipeline. We created the parts of the multipart 
message in the right order. 

The message assingment part looks like: 
HeaderInfo = new System.Xml.XmlDo***ent(); 
HeaderInfo.LoadXml("<ns0:MSH_24_GLO_DEF 
xmlns:ns0=\"http://microsoft.com/HealthCare/HL7/2X\"><MSH><MSH.2_EncodingCharacters>^~\\&</MSH.2_EncodingCharacters><MSH.3_SendingApplication><HD.0_NamespaceId>SrcApp</HD.0_NamespaceId><HD.1_UniversalId>SrcAppUid</HD.1_UniversalId></MSH.3_SendingApplication><MSH.4_SendingFacility><HD.0_NamespaceId>srcFac</HD.0_NamespaceId><HD.1_UniversalId>srcFacUid</HD.1_UniversalId></MSH.4_SendingFacility><MSH.5_ReceivingApplication><HD.0_NamespaceId>dstApp</HD.0_NamespaceId><HD.1_UniversalId>dstAppUid</HD.1_UniversalId></MSH.5_ReceivingApplication><MSH.6_ReceivingFacility><HD.0_NamespaceId>dstFac</HD.0_NamespaceId><HD.1_UniversalId>dstFacUid</HD.1_UniversalId></MSH.6_ReceivingFacility><MSH.7_DateTimeOfMessage><TS.1>200307092343</TS.1></MSH.7_DateTimeOfMessage><MSH.8_Security>sec</MSH.8_Security><MSH.9_MessageType><CM_MSG.0_MessageType>ORU</CM_MSG.0_MessageType><CM_MSG.1_TriggerEvent>R01</CM_MSG.1_TriggerEvent></MSH.9_MessageType><MSH.10_MessageControlId>msgid2134</MSH.10_MessageControlId><MSH.11_ProcessingId><PT.0_ProcessingId>P</PT.0_ProcessingId></MSH.11_ProcessingId><MSH.12_VersionId><VID_0_VersionId>2.4</VID_0_VersionId></MSH.12_VersionId></MSH></ns0:MSH_24_GLO_DEF>");
 
FinalORU.MSHSegment = HeaderInfo;
FinalORU.BodySegments = ORUBODY;
FinalORU.ZSegments = "";

FinalORU(BTAHL7Schemas.MSH1) = 124; 
FinalORU(BTAHL7Schemas.MSH2) = "^~\\&";
FinalORU(BTAHL7Schemas.ParseError) = false; 
FinalORU(BTAHL7Schemas.ZPartPresent) = false;
FinalORU(BTAHL7Schemas.SegmentDelimiter2Char) = true;

//FinalORU(BTAHL7Schemas.Encoding)=65001;

Can anyone give us an idea where we can further look to identifiy the 
problem? 
We are using BTS 2006 en HL7 accelerator 1.3. 

Type gebeurtenis:	Fout
Bron van gebeurtenis:	BizTalk Accelerator for HL7
Categorie van gebeurtenis:	Geen
Gebeurtenis-ID:	4133
Datum:		18/04/2008
Tijd:		11:41:05
Gebruiker:		n.v.t.
Computer:	IHC****32
Beschrijving:
Error happened in header during serialization 
Error # 1
Segment Id: MSH
Sequence Number: 1
Field Number: 12
Error Number: 207
Error Description: Application internal error
Encoding System: HL7nnnn
Alternate Error Number: Z100
Alternate Error Description: From current serializer state, tag 
<VID_0_VersionId> cannot be valid
Alternate Encoding System: HL7-BTA


Error # 2
Segment Id: MSH
Sequence Number: 1
Field Number: 12
Error Number: 203
Error Description: Unsup****ted version id
Encoding System: HL7nnnn


Error # 3
Segment Id: MSH
Sequence Number: 1
Field Number: 12
Error Number: 207
Error Description: Application internal error
Encoding System: HL7nnnn
Alternate Error Number: Z100
Alternate Error Description: A text node with value '2.4' was found inside
a 
complex element. It can only occur within a simple element
Alternate Encoding System: HL7-BTA


Error # 4
Segment Id: MSH
Sequence Number: 1
Error Number: 207
Error Description: Application internal error
Encoding System: HL7nnnn
Alternate Error Number: Z100
Alternate Error Description: The element 'MSH.12_VersionId' has an invalid

structure
Alternate Encoding System: HL7-BTA


Error # 5

Alternate Error Number: 301
Alternate Error Description: Unexpected end of message body found
Alternate Encoding System: HL7-BTA

Error # 6
Segment Id: 
Sequence Number: 1
Error Number: 100
Error Description: Segment sequence error (Empty value not allowed for 
segment as it has at least one required field)
Encoding System: HL7nnnn

Thanks in advance!
Jens