---
Loading PHI
MakeBoxes::boxfmt:
   TraditionalForm | HighEnergyPhysics`Phi`Objects`Private`yakk in
    MakeBoxes[p1, TraditionalForm | HighEnergyPhysi<<18>>vate`yakk]
     is not a box formatting type. A box formatting type is any member of
     $BoxForms.
MakeBoxes::boxfmt:
   TraditionalForm | HighEnergyPhysics`Phi`Objects`Private`yakk in
    MakeBoxes[p2, TraditionalForm | HighEnergyPhysi<<18>>vate`yakk]
     is not a box formatting type. A box formatting type is any member of
     $BoxForms.
MakeBoxes::boxfmt:
   TraditionalForm | HighEnergyPhysics`Phi`Objects`Private`yakk in
    MakeBoxes[p3, TraditionalForm | HighEnergyPhysi<<18>>vate`yakk]
     is not a box formatting type. A box formatting type is any member of
     $BoxForms.
General::stop: Further output of MakeBoxes::boxfmt
     will be suppressed during this calculation.
---
I then procede w/ the QED Radiative Corrections example, and I get to the point where it attempts to insert the fields:
---
In[9]=inserttops =
    InsertFields[tops, {Photon[0]} -> {Photon[0]}, Model -> "Automatic",
      GenericModel -> "Automatic", InsertionLevel -> Classes];
StringJoin::string:
   String expected at position 2 in
    ChPT2<>PseudoScalar2[0]<>PseudoScalar2[0]<><<2>><>o2.
StringJoin::string:
   String expected at position 3 in
    ChPT2<>PseudoScalar2[0]<>PseudoScalar2[0]<><<2>><>o2.
StringJoin::string:
   String expected at position 4 in
    ChPT2<>PseudoScalar2[0]<>PseudoScalar2[0]<><<2>><>o2.
General::stop: Further output of StringJoin::string
     will be suppressed during this calculation.
Get::string: String expected at position 1 in
    Get[ChPT2<>PseudoScalar2[0]<><<12>>2[0]<><<2>><>o2.Gen].
Get::string: String expected at position 1 in
    Get[ChPT2<>PseudoScalar2[0]<><<12>>2[0]<><<4>><>o2.Gen].
Out[9]= $Aborted
---
I have attempted to isolate the bugs, but a simple grep doesn't find any of the error points.  Any advice would be most appreciated.
-CJG