The mod SSPP Logistics Train Mod (0.1.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event SourceSinkPushPull::on_gui_text_changed (ID 2)
SourceSinkPushPull/scripts/gui.lua:76: assertion failed!
stack traceback:
[C]: in function 'assert'
SourceSinkPushPull/scripts/gui.lua:76: in function 'populate_table_from_dict'
SourceSinkPushPull/scripts/gui/network.lua:255: in function 'update_network_after_change'
SourceSinkPushPull/scripts/gui/network.lua:16: in function 'handler'
flib/gui.lua:177: in function <flib/gui.lua:160>

oh hmm, very odd. that's related some in progress work to allow you to re-order items in the station view. if you're able to reproduce the issue, would you be able to send me a save and instructions on how to cause the error?

Edit: Oh, is that when trying to create a class with the same name as existing one? with the intention of renaming it?

Edit2: Yep, that does seem to cause the error. I'll fix it for the next version. Thanks for catching this!

You're welcome :) Your mod looks very unusual and promising, I'll be glad to test it. It seems I like torturing mods more than playing :)))))