I cant get VASL to load

I may have accidentally deleted the VASL (still new and figuring it out) and I have been trying to reload it, several times actually. When I drag it to my APPLICATIONS folder (as prompted), it seems to go there ok but when I click on it to open it, I get the following message:

“VASSAL” cannot be opened because the developer cannot be verified.

The only options it gives me is to “Move to Trash” or “Cancel.”

Im using a Macbook.

Any help is appreciated.

See here.

Thanks for trying to help but that information is out of date. That is an old IOS interface and those prompts are no longer an option. Once it tells me

“VASSAL” cannot be opened because the developer cannot be verified.

It doesn’t give me the option to click on “OK” as the only options it gives me is to “Move to Trash” or “Cancel.”

I read the linked article about quarantine since Apple doesn’t like VASSEl for some reason but Im not computer techie enough to figure out what that all means.

I got it to work once but need help getting this downloaded or to at least function. I’m dead in the water.

What version of MacOS are you using?

Do you mean MacOS? iOS is what iPads and iPhones run, while Apple laptops, and so on, runs MacOS. iOS and MacOS are very different beasts, and Vassal cannot run on iOS (no available Java Virtual Machine).

Did you try the Alternative solution? The one where you use the Terminal? That worked for me on MacOS Tahoe 26.2 on an administrated machine. I suspect your system administrator has disabled third-party apps downloaded via the web. Check System settingsPrivacy & Security and scroll down to Security where it says Allow apps from. It probably says From App Store and known developers or something like that.

Yours,
Christian

I have a MacBook Air and I’m running Sonoma 14.6.

The link was for instructions from 2024 so none of those windows or command options are available.

Thanks for that suggestion. I checked my security settings and I’m set to “App Store and identified developers.”

Are there any other setting I need to adjust?

Im using a Macbook Air.

Just to understand - did you change the setting System settingsPrivacy & SecuritySecurity to something other than "App Store and identified developers.”?

If you did, and you tried to re-install and run Vassal, and it still didn’t work, then you will most likely need to use the Alternative solution. It is not as scary as you may think at a first glance.

You can also try

  1. Open a Terminal
  2. Type in the command
    $ xattr -d com.apple.quarantine /Applications/VASSAL.app
    
    and press enter.

Voila - that should remove quarantine flag and you should be able to execute Vassal.

Yours,
Christian