xact on Fedora 33

[alirezat...@gmail.com]

Hi all,

I'm trying to work with xact on Fedora release 33 but face with a problem:

The line of

Block[{Print}, << xAct`xTras`]

leads to hanging the Mathematica!

Also

<< xAct`xTras`

leads to

Package xAct`xPerm`  version 1.2.3, {2015,8,23}
CopyRight (C) 2003-2020, Jose M. Martin-Garcia, under the General Public License.
Connecting to external linux executable...

Sometimes, I face with the following errors:

PermDeg::undef

xAct`xTensor`Dagger::unknown

Could someone please explain to me what the error comes from?

Many thanks and best wishes,

Alireza

[Saul Teukolsky]

Try taking a look at https://groups.google.com/g/xAct/c/YW4rPKK7I98