JRELoadError

Sun Feb 1 23:01:51 UTC 2015

A few things you might want to try (since you mentioned that the app was sandboxed):
- Check the app bundle's code signature validity with "codesign -vvvv"
- Try launching the app inside of a clean new user account.
- Ask the user if they have a different GateKeeper setting than you do.
- Ask the user which OS version they are on, and compare it to the one you are using to reproduce.

Good luck,
Mike Swingler
Apple Inc.

> On Feb 1, 2015, at 12:17 PM, Emmanuel Puybaret <puybaret at eteks.com> wrote:
> 
> Thank you all for your suggestions.
> Just to be clear, this error happens for very few users in a sandboxed version of the program that embeds a copy of the JRE.
> The error happens with JavaAppLauncher and with the launcher provided with javafxpacakager.
> Nevertheless, I requested to a user who encountered this issue to reset JAVA_HOME and to remove all JVMs he could find
> in folders "/Library/Internet Plug-Ins", "/Library/Java/JavaVirtualMachines" and "/System/Library/Java/JavaVirtualMachines".
> From his report, this didn't help at all. :-(
> 
> Any other idea of a possible conflict?
> 
> Thans for your help :-)
> --
> Emmanuel PUYBARET
> Email  : puybaret at eteks.com <mailto:puybaret at eteks.com>
> Web    : http://www.eteks.com <http://www.eteks.com/>
>          http://www.sweethome3d.com <http://www.sweethome3d.com/>
>> Le 1 févr. 2015 à 17:42, Peter J Slack <pslack at wavedna.com <mailto:pslack at wavedna.com>> a écrit :
>> 
>> Just to clarify my post, I'm suggesting this is potentially the reason why some canned java launchers may not be working with openjdk 1.7 + as opposed to recommending using java 1.6. 
>> 
>> As far as canned launchers go, I would recommend Oracle's FX Ant.  not only does it embed java for you and create an application bundle , it creates a package installer, also works for windows.
>> 
>> the FX:DEPLOY task constructs the launcher for your project
>> 
>> http://docs.oracle.com/javafx/2/deployment/javafx_ant_task_reference.htm <http://docs.oracle.com/javafx/2/deployment/javafx_ant_task_reference.htm>
>> 
>> 
>> 
>> 
>> 
>> On Sat, Jan 31, 2015 at 7:49 PM, Mike Swingler <swingler at apple.com <mailto:swingler at apple.com>> wrote:
>> Please search for the Java 7, 8, 9 JVM symbols before trying to find the Java 6 symbols. We are actively discouraging developers from using Apples Java SE 6, since it has been deprecated for almost 5 years, and will be unavailable for some future version of OS X. We want developers and users using the best/newest Java available, even if Apple's old one is installed.
>> 
>> Thanks
>> Mike Swingler
>> Apple Inc.
>> 
>> > On Jan 31, 2015, at 8:45 AM, Peter J Slack <pslack at wavedna.com <mailto:pslack at wavedna.com>> wrote:
>> >
>> > The Mac version JRE 1.6 uses different symbols than 1.7 and 1.8 for the 2
>> > key functions used by a launcher to load and run JVM
>> >
>> > in order to remedy this I've searched both symbols in case one fails when
>> > launching a JVM in my own launcher
>> >
>> > Launchers have to load the library into memory and then wrap 2 key
>> > functions.  Apple names these functions differently
>> >
>> > here's a code snippet in C illustrating how I've adapted setting up to
>> > launch the JVM by loading in memory, if the Apple naming fails I revert to
>> > openjdk naming
>> >
>> > //first see if the apple naming is active
>> > WRAPPED_JNI_CreateJavaVM my_JNI_CreateJavaVM = (WRAPPED_JNI_CreateJavaVM)
>> > dlsym(handle,"JNI_CreateJavaVM_Impl");
>> >
>> > //we need to try the possibility that this is not Apple JVM where they
>> > mangle the names by appending _impl
>> >        if(my_JNI_CreateJavaVM == NULL){
>> >
>> >               //this is the case for openjdk 1.7 + where they use the
>> > traditional symbols in jvm.dll
>> > my_JNI_CreateJavaVM = (WRAPPED_JNI_CreateJavaVM)
>> > dlsym(handle,"JNI_CreateJavaVM");
>> >
>> > }
>> >
>> > WRAPPED_JNI_GetCreatedJavaVMs my_JNI_GetCreatedJavaVMs =
>> > (WRAPPED_JNI_GetCreatedJavaVMs)dlsym(handle,"JNI_GetCreatedJavaVMs_Impl");
>> >
>> > if(my_JNI_GetCreatedJavaVMs == NULL){
>> > my_JNI_GetCreatedJavaVMs =
>> > (WRAPPED_JNI_GetCreatedJavaVMs)dlsym(handle,"JNI_GetCreatedJavaVMs");
>> > }
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > On Fri, Jan 30, 2015 at 8:43 PM, Michael Hall <mik3hall at gmail.com <mailto:mik3hall at gmail.com>> wrote:
>> >
>> >> On Jan 30, 2015, at 4:00 PM, Emmanuel Puybaret <puybaret at eteks.com <mailto:puybaret at eteks.com>> wrote:
>> >>
>> >>> Hi,
>> >>>
>> >>> I developed a sandboxed version of Sweet Home 3D that comes with its own
>> >> copy of JRE 7.
>> >>> Miserably, a few users reported recently that they got a "JRELoadError"
>> >> when they launch the application.
>> >>> I tried to update from JRE 7u72 to JRE 7u76, tried to replace
>> >> JavaAppLauncher by the launcher generated by javafxpackager,  and also
>> >> tried to replace the JRE 7 copy by a JRE 8 copy, but these users reported
>> >> to me it didn't fix this issue.
>> >>>
>> >>> Would have any of you encounter this problem and/or have an idea how to
>> >> fix it?
>> >>
>> >> A number of apps seem to have had the issue if you search on the subject
>> >> error.
>> >> This post….
>> >>
>> >>
>> >> http://jedit.9.x6.nabble.com/jEdit-users-JRELoadError-launching-jEdit-5-2pre1-after-mavericks-upgrade-but-no-java-version-or-JAVAe-td5005300.html <http://jedit.9.x6.nabble.com/jEdit-users-JRELoadError-launching-jEdit-5-2pre1-after-mavericks-upgrade-but-no-java-version-or-JAVAe-td5005300.html>
>> >>
>> >> had a lot of mail list noise but ended up with some valid enough
>> >> suggestions as to what the possible conflicts might be.
>> >> Use of JAVA_HOME
>> >> conflicting with the browser installed JRE version
>> >> some sort of embedded symlink back to an apple JRE
>> >> the possibilities that I remember.
>> >> It suggested a work around of using a 3rd party package for running an app
>> >> configuration that would work with both Apple and Oracle JRE’s.
>> >> There might be some information of use to you in that one. There were a
>> >> number of apps that appeared to have the issue.
>> >>
>> >> Michael Hall
>> >>
>> >> trz nio.2 for OS X http://www195.pair.com/mik3hall/index.html#trz <http://www195.pair.com/mik3hall/index.html#trz>
>> >>
>> >> HalfPipe Java 6/7 shell app
>> >> http://www195.pair.com/mik3hall/index.html#halfpipe <http://www195.pair.com/mik3hall/index.html#halfpipe>
>> >>
>> >> AppConverter convert Apple jvm to openjdk apps
>> >> http://www195.pair.com/mik3hall/index.html#appconverter <http://www195.pair.com/mik3hall/index.html#appconverter>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >
>> >
>> > --
>> > Senior Software Developer / IT Administrator
>> > Work:  (416) 466-9283 <tel:%28416%29%20466-9283>
>> > Fax  :  (866) 855-2605 <tel:%28866%29%20%20855-2605>
>> >
>> > <http://www.wavedna.com/ <http://www.wavedna.com/>>
>> >   <https://www.facebook.com/waveDNA <https://www.facebook.com/waveDNA>>  <http://www.twitter.com/wavedna <http://www.twitter.com/wavedna>>
>> > <http://www.youtube.com/wavedna <http://www.youtube.com/wavedna>>  <http://www.soundcloud.com/wavedna <http://www.soundcloud.com/wavedna>>
>> > <https://plus.google.com/+Wavedna/posts <https://plus.google.com/+Wavedna/posts>>  <http://instagram.com/wavedna <http://instagram.com/wavedna>>
>> > <http://www.linkedin.com/company/wavedna <http://www.linkedin.com/company/wavedna>>
>> 
>> 
>> 
>> 
>> -- 
>> Senior Software Developer / IT Administrator
>> Work:  (416) 466-9283 <>
>> Fax  :  (866)  855-2605 <>
> 