Hi,
Here, same system, trixie, same bug. One remark. From the terminal : from sage.rings.polynomial.multi_polynomial_libsingular import MPolynomialRing_libsingular ImportError: libsingular-Singular-4.3.1.so: cannot open shared object file: No such file or directory Normal because: ~% locate libsingular-Singular-4.3 /usr/lib/x86_64-linux-gnu/libsingular-Singular-4.3.2.so Regards