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I just downloaded and drag'n dropped the update file on my open Cafetran app, as usual. I closed CT but it won't reopen. I shows in the Finder bar (still on Mojave, here) but that's all, the program will not open. I restartet my iMac but still no joy. What should/could I do now?

This is the version I reverted back to.

Will try again to install via the Help menu and see if I get a Successful install message


After installing via Help this it what is says:


Shouldn't the now built-il Java server be listed as the Java version instead of the Java installed on your system? I think it should read "[Java version, probably 12 or 13] OpenJDK 64-bit Server VM".

This was the major change that was introduced a year ago, maybe it now produces a fatal error at launch for you. Maybe an error log or starting CafeTran from the terminal (not sure how that works on a Mac, probably once in Show package contents) can reveal more details.

Personal suggestion: Since you have a backup, I suggest you rename the current .app, install the latest CafeTran package (not just update), then, if it works, copy any relevant data from the old and the new .app via Finder (Show package contents). Preferences should be kept, but you can also back them up for an easy restore. Of course, CafeTran should not be open during the process.


*data from the old and the new .app=data from the old TO the new .app

Hi Jean

I already considered this, but I’d rather await Igor’s advice.

In the meantime I reinstalled Brownie from my backup.

AAMOF I quoted the system's Java version, CT's Java version is in the screenshot here above.

I don't see why all at sudden I get this problem, my last update was to Brownie about a month ago and everything was fine and Brownie is running fine.

The screenshot shows you are using the system Java version, not the built-in Java version, that is for certain.

I thought this is not possible by default anymore, unless the previous internal executable (shown in the package contents) is used.

At any rate, I understand you preferring to wait Igor's advice at this point.

Now this is what I did:

I copied the updated files from the update folder (20200114_update) to my Brownie installation, excepted Cafetran.jar.

CT started without problems.

Then I dropped the new Cafetran.jar to my Brownie installation and CT does NOT start.

I find it preferable to install the latest CafeTran from here: and only mess with the .app internals to copy user-related data (from the old renamed .app), not application data.

Thanks for this hint, Jean. I did as you said, I renamed Brownie to .old and installed the .dmg file from the website. 

Joy! Doughnut starts with no problems with all my settings.

Java version now is: 13.0.1 OpenJDK 64-Bit Server VM

It turns out that new icons require minimum Java 11 to run. If you wish to update to CTE 10.7, you need to reinstall the program on your Mac as follows:

1. Remove your current from Applications folder and download it anew from

2. After re-installation, it should launch just fine.

Later, if you prefer 10.6 Brownie version, then restore it from your backup.

Thanks Igor, read my comment here above. Doughnut now runs fine.

Glad to hear it! 

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