I went into the session in Surveyor mode and the FCA52Gondola, train.gs and hopper errors appear, but whenever I manually place the Mill Gondola, 52', Railgon or the 100-ton 4-bay Hopper, W&LG in the route in session-layer, the script problem does not appear. Meanwhile, if I place it in the session manually, the following causes the train.gs script error to appear:
ATSF Ce-11Caboose
ATSF SD45
JRPX 20800 gal tank car
SP C50-9 Caboose
SP SD40T-2
SP SD45
TankTrain A
TankTrain B
TankTrain C
TTX 89ft TOFC Flatcar Patched (note: it's actual name is TTX Patched 89ft TOFC Flatcar)
UTLX 20800 gallon tank car
Meanwhile, the following does not cause the script error occur:
ATSF B40-8W
ATSF C30-7
ATSF GP60B
ATSF GP60M
FEC 89ft TOFC Flatcar (Note: this might actually have the name FEC BRN 89ft TOFC Flatcar or FEC GRN 89ft TOFC Flatcar)
FEC 89ft TOFC Flatcar 2 (Note: this might actually have the name FEC BRN 89ft TOFC Flatcar or FEC GRN 89ft TOFC Flatcar)
JRPX ACF Centerflow 4 Bay round hatch
Mill Gondola, 52', Railgon
MILW-Boxcar-50ft-01
MILW-Boxcar-50ft-02
MILW-Boxcar-50ft-03
MILW-Bulkhead-60ft-L-01
MILW-Bulkhead-60ft-L-02
MILW-Bulkhead-60ft-L-03
Tri-level ETTX Autorack ATSF
Tri-level ETTX Autorack BNSF
Tri-level ETTX Autorack BN
Tri-level ETTX Autorack CONRAIL FULL
Tri-level ETTX Autorack CONRAIL
Tri-level ETTX Autorack CSX
Tri-level ETTX Autorack NS FULL
Tri-level ETTX Autorack NS
Tri-level ETTX Autorack TTX
Tri-level ETTX Autorack UP
TTX Centerbeam Flat1
100-ton 4-bay Hopper, WL&G
50ft Boxcar BN #223471
50ft Boxcar BN #223936
50ft Boxcar BN #244378
50ft Boxcar BN #244626
50ft Boxcar BN #249089
50ft Boxcar GBW #16256
50ft Boxcar RI #62729
50ft Boxcar UP #369009
As far as I know, the TankTrain cars are the only content that throws up the train.gs errors that does NOT appear on the Jointed Rail website; I found it on the DLS.