I have a notebook with my program. It works whit package FeynCalc. At the latter work with this document, I wrote the сode:
$LoadPhi = True; $Configuration = "ChPTVirtualPhotons2" ; $Lagrangians = "ChPTVirtualPhotons2" "ChPTVirtualPhotons2" ; Get["HighEnergyPhysics'FeynCalc'"] ; Lagrangian[ChPTVirtualPhotons2]
And next to ran the programs, but my program keeps crashing. Now ".nb file" with my program does't launch and crash.
So, how may I remove last changes?