I'm also getting the same error messages:
DownValues::vlist : Cannot set \!
to «l»; value must be a list of rules.
I use WinXP, Mathematica 4.1 and have tried both FeynCalc 18.104.22.168 and 4.2.0. When I select "Rebuild Help Index" in Mathematica, the help browser opens, but doesn't have any mention of Feyncalc.
Any ideas how to fix my install?
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