Dear Forum,
I have a problem with isomorphism function in GUAVA 1.5. Here it is:

gap> x:=Indeterminate(GF(2));;pol:=x^3+x+1;;
gap> H:=GeneratorPolCode(pol,7,GF(2));
a cyclic [7,4,1..3]1 code defined by generator polynomial over GF(2)
gap> IsEquivalent(H,HammingCode(3,GF(2)));
PrintTo: cannot open '/tmp/t3e8.0.1' for output at
CallFuncList( PRINT_TO, arg );
gap> CodeIsomorphism(H,HammingCode(3,GF(2)));
PrintTo: cannot open '/tmp/t3e8.0.2' for output at
CallFuncList( PRINT_TO, arg );

Is it a bug or I just don't have something in my GAP installation?
Sincerely, Stas Bulygin.

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