Programming bug?

[Tonig00]

When I enter this program in the calculator with ROM 10077, and try to check it, the calculator reboots:

EXPORT Er_int1(m,λ)
BEGIN

END;

On the other hand, does somebody knows where to find some CAS programming examples or manual? The official one is not very complete and there are many function with no clear explanation (for example eigenvalues() vs EIGENVAL()). By the way not many algebra examples which I think is much important for a calculator than to draw a graphic.