Set::add: Object "396534" doesn't exist

[Trogtor]

Ever since today I have had Lag like no other.

Here is my Console I pasted on a txt. document

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[Trogtor]

Crap pressed send.

Can anyone please tell me what is going on?

[Trogtor]

Dookie not again.

Ok this error pops up in my console, this happends to me whenever I wrench, print, delete a brick. This also happens when I press "T" to talk, Esc.

Can anyone help?

[Treynolds416]

You keep getting "Set::add: Object "396534" doesn't exist" repeatedly in your console. I'm sure you probably already knew that.

It might be the fault of a rogue add-on

[Treynolds416]

You keep getting "Set::add: Object "396534" doesn't exist" repeatedly in your console. I'm sure you probably already knew that.

It might be the fault of a rogue add-on

Did not read title, ignore first bit