Failed to install MicroEJ SDK and Studio on mac

[christophe.ung]

Hi,

Here is my setup :
macOS HighSierra 10.13.4
java version 8

and downloaded :
MicroEJ-Studio-Installer-MacOS-4.1.4.app
MicroEJ-SDK-Installer-MacOS-4.0.0.app

Both are not launched by my mac, I see the application is launched on the dock but then disappear after few seconds. So I cannot install neighter Studio or SDK on my mac.

Trying to launch both installers on the terminal gives me the following message :
$ open MicroEJ-Studio-Installer-MacOS-4.1.4.app/
LSOpenURLsWithRole() failed with error -10810 for the file /Users/Christophe/Downloads/MicroEJ-Studio-Installer-MacOS-4.1.4.app.
$ open MicroEJ-SDK-Installer-MacOS-4.0.0.app
LSOpenURLsWithRole() failed with error -10810 for the file /Users/Christophe/Downloads/MicroEJ-SDK-Installer-MacOS-4.0.0.app.

[gaetan.harel]

Hi Christophe,

We are aware of this issue and the one here (MicroEJ freezes on Mac). Our teams are working hard at fixing these issues. A version 4.1.5 of both the MicroEJ SDK and the MicroEJ Studio are in the works and should be available this summer.

Gaëtan for MicroEJ

[christophe.ung]

Thanks Gaetan,

I am awaiting for this release please let me know when this update is available.

Regards.

[gaetan.harel]

Hi @christophe.ung,

We released a new version of both the Studio and SDK that should fix your issue, you can find more information here:

[SDK] New MicroEJ SDK Available v4.1.5

Hi all, A new version of the MicroEJ SDK is available through the getting started pages [1]. The new version (4.1.5) brings fixes and enhancements: General MicroEJ Studio is based on Eclipse Oxygen release (4.7). This indirectly fixes the following issues: ** MicroEJ does not boot on macOS (since Java 8 Update 152) ** Closing MicroEJ SDK sometimes crashes Removed the following license checks on Production Platforms: ** MicroEJ Application launch on Simulator ** MicroEJ Sandboxed Applica…

Regards,
Gaëtan

[christophe.ung]

Hi @gaetan.harel ,

I have just downloaded this new release v4.1.15 throughout your website as per described above. However I am still having the same error.

I still cannot install microEJ on my mac.

Regards

[gaetan.harel]

Hi Christophe,

Do you have the same setup as described before? We tested on several Mac without issues. Could you also give me the specific version the Java 8 runtime and the model of your Mac computer, maybe the differences are there.

Regards,
Gaëtan

[christophe.ung]

Hi,

Made a little update since that moment now running :
macOS 10.13.6
java Version 8 Mise à jour 171 (build 1.8.0_171-b11)

here is the model :

Should I update to Mojave ?

Christophe.

[gaetan.harel]

Hmm strange we have similar configuration, same software, different hardware (we do not own a Mac Book air from 2017), and we have no problem.

To track the issue could you:

• specify where is MicroEJ SDK installed (default /Apllications/MicroEJ or elsewhere)?
• start the MicroEJ SDK in debug and see if a stacktrace appears?
  • open a terminal
  • go to /Applications/MicroEJ/MicroEJ Studio-4.1.5/rcp/MicroEJ-Studio-4.1.5.app/Contents/MacOS/
  • launch eclipse in debug: ./eclipse -debug
  • and post here what is printed

Gaëtan

[christophe.ung]

Thanks for your answer.

Sorry maybe my tickets was not enough clear but I was talking about the installer !

I am not able to launch the MicroEJ-SDK-Installer-MacOS-4.1.5.app
Which means MicroEJ SDK is not even installed in Applications folder.

when double clicking on the .app, microEJ logo appears 2 seconds on the dock then disappear.

trying to open it with the terminal gives me the following error :

[gaetan.harel]

Oh my bad:

Could you do the same thing

• go to /path/to/MicroEJ-Studio-Installer-MacOS-4.1.5.app/Contents/MacOS/
• and execute: ./universalJavaApplicationStub
• then print the resulting trace here.

Gaëtan

[christophe.ung]

Here it is :

FRL-FVFV9CH0J1WK:Downloads Christophe$ cd MicroEJ-SDK-Installer-MacOS-4.1.5.app/Contents/MacOS/
FRL-FVFV9CH0J1WK:MacOS Christophe$ ./universalJavaApplicationStub
Exception in thread “main” java.lang.UnsupportedClassVersionError: com/izforge/izpack/installer/bootstrap/Installer : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
FRL-FVFV9CH0J1WK:MacOS Christophe$

[gaetan.harel]

Wow, this error usually indicates that you are executing a newer classfile on an older JVM. The issue here is 51.0 is associated with JRE 1.7 meaning you are executing the installer on a JVM 1.6 for it to be incompatible.

Do you have a 1.6 JVM on your mac (would be curious on a mac from 2017)? could you show me the output of the java -version on the terminal? maybe java is resolved elsewhere in your path?

Gaëtan

[christophe.ung]

There you go :

FRL-FVFV9CH0J1WK:MacOS Christophe$ java -version
java version “1.6.0_65”
Java™ SE Runtime Environment (build 1.6.0_65-b14-468)
Java HotSpot™ 64-Bit Server VM (build 20.65-b04-468, mixed mode)

[gaetan.harel]

Ok that is what I was talking about you are running a JRE 1.6 by default.

Take a look at this documentation from Oracle to change the default JRE or uninstall a JRE:
https://docs.oracle.com/javase/8/docs/technotes/guides/install/mac_jdk.html#A1096903

Be careful on which version you remove/change since you need a JRE to execute the installer (but 1.7 at least).

Hope it solves the issue.
Gaëtan

[christophe.ung]

Thanks I managed to launch the installer by installing the new jre-8u191-macosx-x64.dmg, Great news !

Unfortunately I might be not lucky but now the installer get stuck during installation here :

After that, installer stays stuck …

Any hint why it stays there ?

[gaetan.harel]

Hi Christophe,

Did you launched the installer from a terminal? Is there any traces?

Gaëtan

[christophe.ung]

Hello Gaetan,

Sorry for the last post, I just left my computer for few hours … and bim the installation was finished

Thanks a lot for your help.

Christophe.