[1.1.20] Crash using smart belt underground placement in multiplayer (CommonManualBuilder::buildByMovingCheck)

[Zurhydryh]

Playing on a friend's server, when I try to drag belts over another belt line, my game crashes. His game/server is fine. It happens every time I drag across a belt. When reconnecting, I can see that the belt placed up to where it meets the existing belt.

[Loewchen]

Ref.: 95689, 95706, 95709

[qflllys]

Hello, I also met the same problem.

[Firedodger]

Hi all!

I have the exact same problem as Zurhydryh with a server running on factorio.zone.

Logs included.

Back to the oldskool way for now

Note 1: Just tried it with an 'empty' belt and there it didn't crash.
Note 2: Now it did

[kovarex]

Thanks for the report, it is now fixed for the next release.

[Firedodger]

Thanks! And as always; You guys rock!