Transaction Failed: Vault check in

Hi,
I can't check in my files via Vault I am using 4.1.2 client version . I am getting this exception:

Upload for item .... failed too many times, aborting transaction. 
Please verify your network settings using the Options dialog under the Tools menu in the Vault GUI Client. 
The specific error was "The server returned an unknown error header: FailFileInvalidCheckSum"
An exception was encountered during the transaction. Exception: The server returned an unknown error header: FailFileInvalidCheckSum at VaultClientOperationsLib.ClientInstance.UploadItem(ChangeSetItem item, String txID, Byte[]& streamBuffer, Int32& bytesWrittenThisFile, Boolean bIsImport)
at VaultClientOperationsLib.UploadThread.ProcessCommand(UploadThreadCommand command, UploadThreadCommandResult& outputResult)

Can you help me ?

Hi Peter,

Please download the latest version of that series i.e SourceGear Vault 4.1.4 from http://www.sourcegear.com/downloads.html . Your issue will be fixed after installing that version.