Text Tags Error - "role must have at least one signature on the doc...

Hi, I am trying out the Text Tags for configuring the signing over the API and getting this error as I try to create the package and send. Can you have a peek - I suspect that it is something simple :( This should be the required "Signature" as a text tag : Field [Signature], Value [{{esl_clientSig:client:signature}}] > Exception in thread "main" com.silanis.esl.sdk.internal.EslServerException: Could not upload multiple documents to package. Exception: HTTP POST on URI https://sandbox.esignlive.com/api/packages/iyaHr8nwXpAS9SW4-HB2R-LXnu4=/documents resulted in response with status code: [400, Bad Request]. Optional details: {"code":400,"messageKey":"error.validation.texttag.noSignatureExists", "name":"Validation Error","message":"{{esl_clientName:client:SignerName}}: The role must have at least one signature on the document in order to have associated fields.", "parameters":{"tag":"{{esl_clientName:client:SignerName}}"}} at com.silanis.esl.sdk.service.PackageService.uploadDocuments(PackageService.java:391) at com.silanis.esl.sdk.EslClient.uploadDocuments(EslClient.java:680) at com.silanis.esl.sdk.EslClient.createPackage(EslClient.java:262) When I look at the PDF, it has the following text tags in it (dump of the pdf form fields): : Field [Name of authorized representative of plan sponsor please print], Value [{{esl_clientName:client:SignerName}}] Field [Title], Value [{{esl_clientTitle:client:SignerTitle}}] Field [Date], Value [{{esl:clientDate:SigningDate}}] Field [Signature], Value [{{esl_clientSig:client:signature}}] and the java code is adding the "client" as the role: // Build Package, Document & Description, Email Message, Signer, Document // Extraction (to define fields) DocumentPackage slRiskPackage = PackageBuilder.newPackageNamed(packageName) .describedAs("Questionnaire - eSignature Required") .withEmailMessage("Hello " + client_fname + ",\n" + "Please sign this.\nThank you.") .withSigner(SignerBuilder.newSignerWithEmail(client_email).withCustomId("client").withFirstName(client_fname) .withLastName(client_lname).withTitle(client_title).withCompany(client_company) ).withDocument(DocumentBuilder.newDocumentWithName("Sample Questionnaire").fromFile(pdfFileName) .withExtractionType(ExtractionType.TEXT_TAGS) .enableExtraction() ).build(); // Create Package PackageId packageId = eslClient.createPackage(slRiskPackage); // Send for Signature eslClient.sendPackage(packageId);