# FormCalc Troubleshooting

#### Safinaz

Hi all,

I was wondering if someone knows enough about the FormCalc package to help me out: I am using FeynArts to generate Feynman-diagrams for certain tree-level processes in my own model and FormCalc to calculate the squared amplitude of these processes, the problem is that when I make

CalcFeynAmp[Amp], it gives an error:

preparing FORM code in /home/safi/Dro/FormCalc/fc-amp-12.frm
running FORM...
ReadForm::formerror: \!$$\*StyleBox[\!\("Illegal position for 33\nIllegal position for 23\nIllegal position for 34\nIllegal position for 24"$$, "MT"]\)
\$Aborted

One solution for that as on ( http://www.feynarts.de/formcalc/trouble.html ) FormCalc Troubleshooting page is to run fc-amp-12.frm manually by Form comes with FormCalc to see
where does the problem come from, but when I make : ./tform fc-amp-12 , it gives :

./tform: cannot execute binary file

Have I typed the command correctly .. any suggestions ?

Regards,
Safinaz

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