Handle Storage Exception "The append position condition specified was not met"

[HowardvanRooijen]

Unhandled Exception: Microsoft.Azure.Storage.StorageException: The append position condition specified was not met.
   at Microsoft.Azure.Storage.Blob.BlobWriteStreamBase.ThrowLastExceptionIfExists()
   at Microsoft.Azure.Storage.Blob.BlobWriteStream.FlushAsync(CancellationToken token)
   at Microsoft.Azure.Storage.Blob.BlobWriteStream.CommitAsync()
   at Microsoft.Azure.Storage.Blob.BlobWriteStream.Dispose(Boolean disposing)
   at System.IO.Stream.Close()
   at Microsoft.Azure.Storage.Blob.CloudAppendBlob.UploadFromStreamHelper(Stream source, Nullable`1 length, Boolean createNew, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
   at Microsoft.Azure.Storage.Blob.CloudAppendBlob.AppendFromStream(Stream source, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
   at Microsoft.Azure.Storage.Blob.CloudAppendBlob.AppendFromByteArray(Byte[] buffer, Int32 index, Int32 count, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
   at Microsoft.Azure.Storage.Blob.CloudAppendBlob.AppendText(String content, Encoding encoding, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
   at Endjin.Ais.Receiver.StorageClient.AppendMessages(IList`1 messages) in C:\Ais.Net.Receiver\Solutions\Ais.Net.Receiver\StorageClient.cs:line 43
   at System.Reactive.AnonymousSafeObserver`1.OnNext(T value) in D:\a\1\s\Rx.NET\Source\src\System.Reactive\AnonymousSafeObserver.cs:line 44
   at System.Reactive.Subjects.Subject`1.OnNext(T value) in D:\a\1\s\Rx.NET\Source\src\System.Reactive\Subjects\Subject.cs:line 148
   at Endjin.Ais.Receiver.NmeaReceiver.RecieveAsync() in C:\Ais.Net.Receiver\Solutions\Ais.Net.Receiver\NmeaReceiver.cs:line 62
   at Endjin.Ais.Receiver.Program.Main(String[] args) in C:\Ais.Net.Receiver\Solutions\Ais.Net.Receiver\Program.cs:line 31
   at Endjin.Ais.Receiver.Program.<Main>(String[] args)