was copy pasting the plates when it happen.

Edit:
I use a pre made BP when it happens here's the the link again too
https://cdn.discordapp.com/attachments/697564089907675217/825345518628110376/unknown.png Game version 1.0

More specific it happens when I/U use the icon shown on image.
https://cdn.discordapp.com/attachments/697564089907675217/825390930517295124/unknown.png

Hey, um... I cannot in any way reproduce your error. There are three problems:

• I can't open your first linked image, getting a strange redirect to an xml file.
• Your second image (the icon), in which GUI do you see it or click it? There is no such icon in the Display Plate GUI...
• I just tried copy/pasting and blueprinting in the latest 1.1.30 with mod version 1.1.0 and it worked like a charm. Do you maybe use other mods doing shenanigans with blueprints?

• I can't open your first linked image, getting a strange redirect to an xml file.

fixed this on first comment.

• Your second image (the icon), in which GUI do you see it or click it? There is no such icon in the Display Plate GUI...

My mistake. Meant to say if I used the pre made BP that I made from it. Then it happens.

more specific links.
https://cdn.discordapp.com/attachments/697564089907675217/825756038053625877/unknown.png using the blue plus there
https://cdn.discordapp.com/attachments/697564089907675217/825756193175502898/unknown.png

Sorry for the late reply, I finally found time to look into this.

Seems like this is a duplicate issue to yours, yet I still am not 100% sure on what you do.

The other issue can be reproduced by opening any blueprint (right-click), choosing new contents (that blue plus button you mentioned) and marking a display plate with a set icon. If selecting an empty display instead, nothing should crash. Does this sound like your issue?

If this is a duplicate indeed, I'll have a wrapper preventing the crash in the next release. Sadly, updating blueprints including icons and map markers that way won't be possible even with it, because Factorio handles blueprint updates the way it does.

If it is that, should be mitigated in 1.1.3.

Ty. Tho the bug was in 0.18/1.0 not 1.1 still Thanks

The other issue can be reproduced by opening any blueprint (right-click), choosing new contents (that blue plus button you mentioned) and marking a display plate with a set icon. If selecting an empty display instead, nothing should crash. Does this sound like your issue?

Yes. Tho the issue happened anyway. From what i remember it happen either with or without any icon selected.

Can take it over discord if interested ?

Mitigated in 1.1.4.