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Hi,

the stable version of FeynCalc normally receives bug fixes until
a new stable version is released. The bug fixes go into the hotfix-stable
branch

https://github.com/FeynCalc/feyncalc/tree/hotfix-stable

which is used whenever one installs (or reinstalls) FeynCalc using the
automatic installer. The bug you are referring to was fixed in January
2017:

<https://github.com/FeynCalc/feyncalc/commit/365e480f9c6ad9820469c754bf1ae379f7300279>

You can just reinstall FeynCalc to have all the current fixes. And
better check out the hotfix-stable branch from time to time to be sure
that you are up to date.

Cheers,
Vladyslav

Am 13.08.2017 um 14:46 schrieb Sun Qing-Feng:
> Hi Vladyslav, please check this bug on FC9.2.0 stable version
>
> ScalarProduct[p, p] = (mb + mc)^2;
>
> FV[p, \[Mu]] FV[p, \[Nu]] MT[\[Mu], \[Nu]] // Contract
>
> and the output is mb^2+mc^2 ?
>
> Many thanks.
>
>

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