CRA unable to file my NETFILE - no error code provided

I have been trying over the past three days to file my NETFILE. 

 

Each time I try I get the following message;

We're sorry, the Canada Revenue Agency was unable to accept your NETFILE tax return

Message from the CRA:

CRA Result Code:

 

No code is provided. I have checked that my name and SIN are the same for both the CRA and my tax return. I have tried at several different times on different days. 

Is there something else that could be prohibiting me from filing or is it a system issue?