I have a 3-tile path: Path->Loading Stop->Path
The Loading Stop has a Constant Combinator facing the Loading Stop, sending: T=1, Iron Gear=1, Green Circuit=1
I place the cart on the first Path tile, add fuel and the game immediately crashes:

The mod Logistic Carts (0.3.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event logicarts::on_tick (ID 0)
Value must be a dictionary in property tree at ROOT.parameters
stack traceback:
[C]: in function 'newindex'
__logicarts/control.lua:1008: in function 'setCombinatorSignals'
logicarts/control.lua:1914: in function 'runCar'
logicarts/control.lua:2165: in function <logicarts/control.lua:2122>

Same here. When I place a constant combinator next to LogiCart road piece the server crashes:

logicarts/control.lua:1814: in function 'runCar'
logicarts/control.lua:2165: in function <logicarts/control.lua:2122>
3672.715 Error ServerMultiplayerManager.cpp:91: MultiplayerManager failed: "The mod Logistic Carts (0.3.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event logicarts::on_tick (ID 0)
Value must be a dictionary in property tree at ROOT.parameters
stack traceback:
[C]: in function 'newindex'
__logicarts/control.lua:1008: in function 'setCombinatorSignals'
logicarts/control.lua:1814: in function 'runCar'
logicarts/control.lua:2165: in function <logicarts/control.lua:2122>"
3672.715 Info ServerMultiplayerManager.cpp:780: updateTick(21166966) changing state from(InGame) to(Failed)
3672.715 Quitting: multiplayer error.
3673.769 Info ServerMultiplayerManager.cpp:140: Quitting multiplayer connection.
3673.769 Info ServerMultiplayerManager.cpp:780: updateTick(4294967295) changing state from(Failed) to(Closed)
3674.054 Info UDPSocket.cpp:218: Closing socket
3674.054 Info UDPSocket.cpp:248: Socket closed
3674.111 Goodbye