No symbols in output

[Adrià delhom i latorre]

I'm tring to us xAct packages but I had some problems. I'm quite new of the xAct system, in the past I used dPark and other Mathematica routines to perform tensorial calculus. It seems to me that the installation was completely successful (xAct is in my Mathematica 10.0 AddOns/Applications -
xPrint, xPand included and Riemann folders put in Invar), because Mathematica correctly loads every xAct subpackages, but when I try to
inhaugurate my .nb I immediately find symbolic and computational issues.
For example, I begin with

Needs["xAct`xTensor`"]
or
<< xAct`xTensor`

I define a tensor

DefManifold[M4, 4, Complement[IndexRange[a, z], {g, h}]]

and I obtain as expected
** DefManifold: Defining manifold M4.
** DefVBundle: Defining vbundle TangentM4.

but when I try to show the symbolic included tensors, for examples

{RiemannCD[-a, b, -c, d], RicciCD[a, -b], RicciScalarCD[],
 WeylCD[-a, -b, -c, -d], EinsteinCD[-a, -b], epsilong[-a, -b, -c, -d],
  ChristoffelCD[a, -b, -c]}

I obtain the literal output

{RiemannCD(-a,b,-c,d),RicciCD(

a,-b),RicciScalarCD(),WeylCD(-a,-b,-c,-d),EinsteinCD(-a,-b),epsilong(-a,-b,-c,-d),ChristoffelCD(a,-b,-c)}

The same for every illustrative public notebook, such as PI-xAct.nb or Lagrangian-variation-xPert-VarD.nb: they do not work. I'm on OSX High Sierra, if it matters. Can you help me about this issue? I cannot find something useful online. Is my Mathematica version incompatible with the uptodate xAct package I use?

[Thomas Bäckdahl]

Hi!

Your output is probably set to TraditionalForm instead of StandardForm.
In older versions one could in the menu choose, Edit, Preferences, Evaluation and set "Format type of new output cells:" to StandardForm to fix the problem. Now I don't see where they have hidden it in my current version of Mathematica.

Regards
Thomas

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