TOPIC: CMC - Mailchimp for Joomla - Timestamp error

I am getting this error:
Error
An error has occurred.
0 DateTime::__construct(): Failed to parse time string (14/02/1973) at position 0 (1): Unexpected character
when using the CMCmodule to enter this information:
# Gravatar Email Firstname Lastname User id List Timestamp Status ID
1 -- This email address is being protected from spambots. You need JavaScript enabled to view it. -- -- 0 Macrobeus Nutrition eNews 0000-00-00 00:00:00 subscribed 24
The timestamp worked fine for the first three records.
However, it failed once the records were deleted from both the Joomla component and the Mailchimplist.
Please advise how to resolve.

Hey Richard,
Is this the complete message?
0 DateTime::__construct(): Failed to parse time string (14/02/1973) at position 0 (1): Unexpected character

Do you have a line where it's happening? You are getting the error when you hit the subscribe button or when exactly?

Regards,
Daniel