[imp] IMP H4 (5.0.17) error: DateTime::__construct(): Failed to parse time string (-001-11-01) at position 7 (-): Double timezone specification.

[gimili]

When I open event invitations I get the following error: 
DateTime::__construct(): Failed to parse time string (-001-11-01) at 
position 7 (-): Double timezone specification.
Does anyone else see this?
Thanks,

-- 
gimili