Could you let us know what is the title of your add-on?
And would you please send following source to email@example.com
* All files in C:\ProgramData\Adobe\Extension Manager CC\Configuration\Entitlement
and take a screenshot on the add-on which you encountered 603 issue.
The add-on in question is called "Flypaper Select" (by Flypaper Textures).
This morning, when I sent the question, it was on last page of the free PS
add-on list and showed the add-on as compatible with all three latest PS
versions. Tonight, when I click on the add-on in "my add-ons" list, it now
shows compatibility only with PS6 and CC, and I can no longer even find it
in the big add-ons list. I will try to send screen shot of "my add-ons" to
the address you listed. It is also below.
Thanks for your help. I have been finding many add-ons change from day to
day, and many won't show up in Extensions window even though the desktop CC
app says they have been installed. I assume I am not the only person with
Thank you from your information, we will investigate and get back to you.