ah yes sorry, not code signed, it does this, type in terminal to remove quarantine
sudo xattr -rd com.apple.quarantine /
and drop the xol app from finder so it looks like this:
enter password it’s ok, maybe it go higher threatlevel because there is no windows
Even simpler.
Extract the contents of the zip-file to the desktop.
After the file is extracted move the file to the app folder.
Voilà, that’s all.
No need to use terminal commands. 
in what mac OS version are you ?
i tried your way, still shows gate keeper alert
or maybe you disabled gatekeeper for all apps using this ?
sudo spctl --master-disable
Not that I’m aware of.
I have the latest version: macOS Monterey 12.5.1
I’m using this method for quite some time now and it has never failed on me.
The latest version of Xol was downloaded by me and after I had expanded it to the desktop I moved the app to the App folder. Started the program and I works without any warning.
!!! crazy
maybe you disabled gatekeper for some years and upgraded as is ? dunno how to check gatekeeper status in the terminal, search later yes
Moving an application from downloads to somewhere else usually removes the quarantine flag, but for reasons unknown it doesn’t always work for everyone.
We’ve been struggling with this as Xojo users since the quarantine system was introduced.
!!! worth knowing !
means the quaratine system is kinda useless ?
No, because it leans towards being quarantined. The point of quarantine is to prevent malicious apps from accessing your entire system and wreaking havoc.
Code signing makes apps launch, but for something like Plugins Pro that accesses files outside of the package it can still be a problem.
I got the “Damaged and should be moved to the trash” as well with Xol v14, under Mojave. Never happened before with the half-dozen previous versions 
Strangely, it just launched fine on my Mac. I didn’t even moved it out of the “Downloads” folder (I’ll later, it was just for testing). The app started in translocation mode.
Mac OS 12.5.1 
Same here
Yesterday I had that with a single user of my app, too. App notarised and everything. We are reaching peak security soon: your mouse has moved - your computer needs to be restarted.
I have the same issue. I cannot open it.
before, I just need to use “control-click” on the Xol twice for open it, but not anymore…
Is it downloaden from http or https ?
r14 coded and signed nicelly wrapped into dmg, thanks to @John_McKernon
glitch : forgot the plist entry to hide the app, if you put the line in the plist after installation, gate keeper will scream lol says samaged app ect…
you don’t need to update in you got r14 already
time flies, !
I really wanted to make couple fixes in in 2022 and here we are 2023 
is there anybody still using xol exepct me 
unfortunatly i haven’t done much xojo deep work in the last 2 months, i wish i had.
so here a simple update, Xol r16
not code signed, use de quarantine terminal above
the only difference is the Topics menu which is simplier
you don’t need to update from r14
the packaged dmg and signed r14 is still here
Xol is selfcontained, doesn’t read or write to disk, nor it connects to the internet.
I wish in the future add more MBS, and Einguhu, fix more things ect…but not enough time
In november i try to fix the most annoying thing, it’s the beep sometimes, din’t suceed, i think it’s because window order or something
The second most annoying thing is the editfield in menu that become inactive sometimes, i couldn’t fix it either.
And now i was able to save it for github, so here it is.
didn’t clean, could be messy ;p
spctl --status
r17
added XUI libs https://xui.software/
a must have, the tags are awesome for any usecases
i was reading the docs, i can’t stand reading full screen docs anymore, it interfere with the workflow too much, small docs on the side is where it should be 
