Test in ME_Radial_bm2 compares lambda to -1 but message refers to lambda == 1

[agryman]

ME_Radial_bm2:=proc(lambda::algebraic,mu_f::nonnegint,mu_i::nonnegint)
if lambda=-1 then
error "Singular 1/beta^2 for lambda=1";
fi:

Comparing lambda to -1 seems wrong since elsewhere lambda is required to be greater than 1:

"also note that we require both lambda>1 and lambda'>1"

Is the correct test: lambda <= 1