modemask bug?

My settings:

userforward:
no_verify,
driver = forwardfile;
file = .forward,
modemask = 022


The error:

gregorys@??? cannot be resolved at this time:
<gregorys@???> - bad mode (100664) for /home/users/g/gregorys/.forward (userforward director)


The problem:

None of the mask bits are set in the error.