A Google search indicates this is likely malware and not Pd:

https://discussions.apple.com/thread/252501431

On May 4, 2022, at 12:22 PM, pd-list-request@lists.iem.at wrote:

Message: 1
Date: Wed, 4 May 2022 08:46:19 +0200
From: Nicolas Montgermont <list@nimon.org>
To: Pd-list <pd-list@lists.iem.at>
Subject: [PD] Popup window appearing once in a while : "Expecting
Value: line 1 column 1 (char 0)"
Message-ID: <4e8a4dc6-41f1-557a-d5ab-7e46e98cd77d@nimon.org>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Hello Pders,

On a patch designed to run for a long time,
I have a window appearing every few hours:

Error while installing : Expecting Value: line 1 column 1 (char 0)

Error while installing : Expecting Value: line 1 column 1 (char 0)


Do you know where it comes from?
Pd 0.51.0
OSX 10.9.1
Thanks !
n

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Dan Wilcox
@danomatika
danomatika.com
robotcowboy.com