Monterey (and later), and mac ARM

Is kJams currently compatible with Catalina?

No. You can not run kJams under macOS Catalina.

Why not?

kJams is currently a 32bit application, and Catalina does not support 32bit apps.

When will kJams be able to run under Catalina?

The hope is "some time in 2020", the optimistic hope is "mid-2020", but beware "the planning fallacy"

How can I run kJams today if I have Catalina?

You can use the Virtual Machine software Parallels Desktop. Then install macOS Mojave (you can get it from the App store, even under Catalina). There is a forum discussion here.

Can I downgrade back to macOS 10.14 Mojave?

If you have a mac purchased PRIOR TO October 2019, then YES, you can downgrade, in two different ways:

1. use your time machine backup from before the upgrade
2. reinstall from scratch using a USB stick. You can make a bootable Mojave Installer USB stick using DiskMaker.

I'm sorry I dropped the ball

I tried really hard to inform all users of kJams not to upgrade to Catalina:

1. directly within kJams: a notification would pop up
2. on the kJams web site: prominently at the top of every page
3. in the newsletter, i sent it out over a year before Catalina was released, and a few times since
4. on my Facebook page
5. via my Twitter account

Unfortunately if your auto updater was broken, because you were on a very old version of kJams, you never got the in-app notification. If you never visited the web site, and you weren't subscribed to the newsletter, and you never went to the facebook page, or saw the tweets, then sadly i was not able to reach you in time. I am truly sorry about that.

Can I track your progress?

Yes you can!

I have another question

email me