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I try to use

<<Combinatorica`

or call

IntervalSlider; Needs["Combinatorica`"]

or call

Quiet[Needs["Combinatorica`"], General::compat]

in Mathematica 11, but it fails to obtain the FiniteGroupData for DihedralGroup:

FiniteGroupData["DihedralGroup[4]", "MultiplicationTable"] // Grid

It shows error messages: enter image description here

The relevant information here: http://reference.wolfram.com/language/Compatibility/tutorial/Combinatorica.html and http://reference.wolfram.com/language/Combinatorica/ref/DihedralGroup.html

See also this. But I tried to use the functions mentioned but it does not work.

Are there some ways to fix them?

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