MPF GMC 0.1.5 migation error

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Aug 12, 2025, 7:16:01 AMAug 12

to MPF Users

Hello !

I'm actually working with MPF GMC 0.1.4.

After changing to 0.1.5, i can't launch the game anymore.

I got this error:

Shutdown reason: BCP client local_display disconnected and exit_on_close is set

In the log i found this line:

WARNING : Machine : Attract mode is not active, game will not be playable. Please check your attract mode configuration.

Any idea about this ? Thanks !

2025-08-12-12-59-45-mpf.log

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Aug 12, 2025, 11:17:43 AMAug 12

to MPF Users

It looks like it’s shutting down immediately after connecting to GMC, so the real error is probably in the GMC logs. Can you share those?

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Aug 13, 2025, 5:31:17 AMAug 13

to MPF Users

Godot send this only error:

ERROR: 11:16:47.934 : ERROR : GMCServer : MPF 0.80.0.dev7 does not meet GMC's minimum version requirement 0.80.0.dev9

I tried to update with :

"pip install --upgrade mpf"

but it says it's up to date.

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Aug 13, 2025, 10:34:23 AMAug 13

to MPF Users

ForMPF you’ll need to add --pre to the line (two dashes) and youll be good to go

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Aug 15, 2025, 4:52:07 AMAug 15

to MPF Users

Thank you ! It's working fine.

Maybe we can add this information for the noob like me ^^

pip install --pre --upgrade mpf

On the page :

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