Description
One of the elements of the inverse of the
INITIAL COVARIANCE
,
which is defined in the Data window,
has an absolute value greater than the
value limit
in the Debug Fit dialog.

Suggestion
Either increase the value limit or change the initial covariance.

Diagonal Case
If b is a vector and B is the corresponding
diagonal matrix
,
the inverse of B is the diagonal matrix corresponding
to the element by element inverse of b.