A problem in CharacteristicPolynomial for integral matrices has been fixed.

A problem that could occur when AutomorphismGroup of a number field is computed after a GaloisGroup or Subfields computation was fixed.

A problem with incorrect handling of non-simple extensions resulting in Internal error was fixed.

When creating a degree 1 extension of a number field with DoLinearExtension := false sometimes an incomplete number field was created that could cause an Internal error on printing.

Bugs with power series over non-commutative rings have been fixed.