When adding the 'comomolo' package to GAP in the last patch, some trial code
was accidentally left in. This might cause trouble when using finitely
presented groups together with this package. The remedy is simple:
If you did not install the cohomolo package, nothing has to be changed.
Otherwise, simply edit the file 'init.g' in the directory 'pkg/cohomolo' of
your GAP installation and remove the last paragraph saying:
AUTO( ReadPkg( "cohomolo", "gap", "darstgr" ),
IsDiagonalMat, HermiteNormalForm, DiagonalizedMat, WordList,
We apologize for the error.