Running Umbraco 4.6.1 - I'm getting OutOfMemory exceptions when transferring multiple nodes (10-15 with images) via Courier to our staging site.

Has anyone come across a similar problem, and/or has a simple workaround?  I'm hoping the answer isn't going to be to upgrade to 4.7 - but if that's the solution, so be it :)

Exception of type 'System.OutOfMemoryException' was thrown.
Error details

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown. 
at System.Net.ScatterGatherBuffers.AllocateMemoryChunk(Int32 newSize) 
at System.Net.ScatterGatherBuffers.Write(Byte[] buffer, Int32 offset, Int32 count) 
at System.Net.ConnectStream.InternalWrite(Boolean async, Byte[] buffer, Int32 offset, Int32 size, AsyncCallback callback, Object state) 
at System.Net.ConnectStream.Write(Byte[] buffer, Int32 offset, Int32 size) 
at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder) 
at System.IO.StreamWriter.Write(Char[] buffer, Int32 index, Int32 count) 
at System.Xml.XmlTextEncoder.WriteRaw(Char[] array, Int32 offset, Int32 count) 
at System.Xml.XmlTextWriterBase64Encoder.WriteChars(Char[] chars, Int32 index, Int32 count) 
at System.Xml.Base64Encoder.Encode(Byte[] buffer, Int32 index, Int32 count) 
at System.Xml.XmlTextWriter.WriteBase64(Byte[] buffer, Int32 index, Int32 count) 
at System.Xml.Serialization.XmlSerializationWriter.WriteElementStringRaw(String localName, String ns, Byte[] value, XmlQualifiedName xsiType) 
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterRepositoryWebservice.Write7_Resource(String n, String ns, Resource o, Boolean isNullable, Boolean needType) 
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterRepositoryWebservice.Write12_ResourceTransfer(String n, String ns, ResourceTransfer o, Boolean isNullable, Boolean needType) 
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterRepositoryWebservice.Write42_TransferResources(Object[] p) 
at Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer47.Serialize(Object objectToSerialize, XmlSerializationWriter writer) 
at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Object o, XmlSerializerNamespaces namespaces, String encodingStyle, String id) 
at System.Web.Services.Protocols.SoapHttpClientProtocol.Serialize(SoapClientMessage message) 
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) 
at Umbraco.Courier.RepositoryProviders.WebServiceProvider.RepositoryWebservice.TransferResources(ResourceTransfer[] resources, String user, String pass) in d:\TeamCity6\buildAgent\work\399aef48762b5884\Umbraco.Courier.RepositoryProviders\WebserviceProvider\webservice.cs:line 1094 
at Umbraco.Courier.RepositoryProviders.CourierWebserviceRepositoryProvider.TransferResources(ResourceTransfer[] resources) in d:\TeamCity6\buildAgent\work\399aef48762b5884\Umbraco.Courier.RepositoryProviders\WebserviceProvider\CourierWebserviceRepositoryProvider.cs:line 286 
at Umbraco.Courier.Core.ExtractionManager.ExtractItemResources(Item item, ResourceExtractionOrder order) 
at Umbraco.Courier.Core.ExtractionManager.ExtractResources(ResourceExtractionOrder order) 
at Umbraco.Courier.UI.Dialogs.CommitItem.TransferAndExtractOnSelectedRepo(String repo) 
at Umbraco.Courier.UI.Dialogs.CommitItem.oneSteptransfer(Object sender, EventArgs e) 
at System.Web.UI.WebControls.Button.OnClick(EventArgs e) 
at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) 
at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) 
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) 
at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) 
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Hope you can help :)