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mxj: could not find Java 2 Runtime Environment and mxj_platform_init failed

March 27, 2014 | 12:23 pm

Hello everybody!

I’ve been struggling for a while trying to get my leapmotion to work with Max 6 on a Windows 8.1 computer. So far, no success. ManosOSC for some reason won’t even load. leapformax.com didn’t work. o.io.leap object didn’t work (probably because it was for Mac, although I wasn’t able to confirm).

With the help of a friend I found this website http://www.hfmdd.de/hochschule/institute/studio-fuer-elektronische-br-musik/projekte/leapmotion-mxj/

Didn’t understand the german, but the instructions were in english. I followed the instructions and I got really far! THE ONLY problem:

the object mxj semd.leapmotion wasn’t working. The error message I got:

mxj: could not find Java 2 Runtime Environment.
Error loading:
(mxj) mxj_platform_init failed. Could not initialize the Java Runtime Environment.
Please check your Java installation. http://java.sun.com
Unable to create JVM

I searched online found this:
http://cycling74.com/forums/topic/unable-to-create-jvm-2/ and

http://cycling74.com/forums/topic/mxjcould-not-find-java-2-runtime-environment/

Both somewhat helpful. The idea: to use 32bit Java. I uninstalled all of Java and installe donly 32 bit and this did not solve the problem.

I’m losing my hair! Could someone please help?

Thanks a lot.

Best,
appleslice


March 28, 2014 | 7:25 am

Does Java work at all? What does

java -version

in a console report?


March 28, 2014 | 2:29 pm

When I typed that in command prompt I received this message:

‘ java’ is not recognized as an internal or external command, operable program or batch file.

Then I went to control panel, went to the uninstall/repair part and found Java and it told me the version I had was 1.7.0

So I do have Java. Command prompt doesn’t think so though. What does this mean? That Java didn’t install properly? Everytime I install the same thing happens.


April 3, 2014 | 12:10 pm

Update: So, the sensing of the leap motion works on Max 5 using the mxj semd.leapmotion. However, Max 6 is where the issue is found. I’ve been messing around, but still no success. Could someone please help?


April 12, 2014 | 2:00 am

Do the other mxj externals in Max 6 work? Try [mxj net.maxhole] object for example.

If it does not, look up your max JVM settings:

\Max 6.1\Cycling ’74\java\max.java.config

Compare the settings line-by-line to your working Max 5 distribution. The available options should be the same.
Regards,
Christoph


April 15, 2014 | 11:43 pm

Thank you for taking the time to help me out.

I checked the code and it read the same except the file on Max6.1 had a few more comments about copyright.

It took me long enough to realize that I was using the 64bit version of Max. Once I installed the 32bit version the mxj externals seemed to work because they were not shaded in dark gray.

Get this, once I did everything in your installation txt file, every time I opened the semdd.leapmotion help file Max would shut down completely with no error message. Disk Usage on the computer would go to 100% unless I ended the task with task manager. I did some troubleshooting and found out that max 6 would only shut down when I had the leapjava.jar in cycling74/java/lib. If I deleted the file, I was able to load the help file with the following error message:

java.lang.NoClassDefFoundError: com/leapmotion/leap/Controller
at semdd.leapmotion.<init>(leapmotion.java:44)
(mxj) unable to construct instance of semdd.leapmotion

Any ideas of what to do next?

Thanks.


April 16, 2014 | 9:34 am

To clarify what the notepad files say:

Max 5 max.java.config reads:

; This is the config used by Max when instantiating the JVM ;
; Comments are enclosed within 2 semicolons ;

; The file format is relatively fragile so pay attention ;
; when editing this file !! ;

; some example options one may use ;

; add all jars in /Users/topher/java/lib to the system classpath i.e. immutable classpath ;
; max.system.jar.dir /Users/topher/java/lib;

; add /Users/topher/foo to the system classpath i.e. immutable classpath ;
; max.system.class.dir /Users/topher/foo ;

; these next 2 are typically what you would want to use if you want additional directories ;
; added to your classpath for max ;

; add /Users/topher/myclasses to the dynamic classpath of MXJClassLoader ;
; max.dynamic.class.dir /Users/topher/myclasses ;

; add all jars in /Users/topher/myjars to the dynamic classpath of MXJClassLoader ;
;max.dynamic.jar.dir /Users/topher/myjars ;

; specify some jvm options ;
max.jvm.option -Xincgc
max.jvm.option -Xms64m
max.jvm.option -Xmx256m

; uncomment these options(i.e. remove surrounding semi colons ;
; to cause the JVM to be created ;
; in debug mode and listening for remote debugger connections ;
; on port 8074. This would enable you to interactively debug ;
; your mxj code using JDB or some other debugger which supports ;
; the JDI wire protocol ;

; max.jvm.option -Xdebug ;
; max.jvm.option -Xnoagent ;
; max.jvm.option -Xrunjdwp:transport=dt_socket\,address=8074\,server=y\,suspend=n ;
; max.jvm.option -XX:-UseSharedSpaces ;

Max 6.1 max.java.config reads:

; ;
; Permission is hereby granted, free of charge, to any person obtaining a copy of this software ;
; and associated documentation files (the "Software"), to deal in the Software without restriction, ;
; including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, ;
; and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, ;
; subject to the following conditions: ;
; ;
; The above copyright notice and this permission notice shall be included in all copies ;
; or substantial portions of the Software. ;
; ;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, ;
; INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. ;
; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, ;
; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE ;
; OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ;

; This is the config used by Max when instantiating the JVM ;
; Comments are enclosed within 2 semicolons ;

; The file format is relatively fragile so pay attention ;
; when editing this file !! ;

; some example options one may use ;

; add all jars in /Users/topher/java/lib to the system classpath i.e. immutable classpath ;
; max.system.jar.dir /Users/topher/java/lib;

; add /Users/topher/foo to the system classpath i.e. immutable classpath ;
; max.system.class.dir /Users/topher/foo ;

; these next 2 are typically what you would want to use if you want additional directories ;
; added to your classpath for max ;

; add /Users/topher/myclasses to the dynamic classpath of MXJClassLoader ;
; max.dynamic.class.dir /Users/topher/myclasses ;

; add all jars in /Users/topher/myjars to the dynamic classpath of MXJClassLoader ;
;max.dynamic.jar.dir /Users/topher/myjars ;

; specify some jvm options ;
max.jvm.option -Xincgc
max.jvm.option -Xms64m
max.jvm.option -Xmx256m

; uncomment these options(i.e. remove surrounding semi colons ;
; to cause the JVM to be created ;
; in debug mode and listening for remote debugger connections ;
; on port 8074. This would enable you to interactively debug ;
; your mxj code using JDB or some other debugger which supports ;
; the JDI wire protocol ;

; max.jvm.option -Xdebug ;
; max.jvm.option -Xnoagent ;
; max.jvm.option -Xrunjdwp:transport=dt_socket\,address=8074\,server=y\,suspend=n ;
; max.jvm.option -XX:-UseSharedSpaces ;

; 1 = compatible mode (default in 64bit) ;
; 2 = hi performance mode (default in 32bit) ;
; hi performance mode for 64 bit is only supported with a JavaVM > 6u33 (where -XX:+UseCompressedOops is default) ;
; mxj.msp.mode 2 ;



jml
April 24, 2014 | 6:07 pm

any luck w/ this? i’m also getting failures after installing java 1.7.0_55 on win7 and restarting max. here are my specs:

{
"version" : "Version 6.1.7 (e5b6090)",
"platform" : "windows",
"arch" : "x86",
"osversion" : "Microsoft Windows 7 Professional Service Pack 1 (build 7601), 64-bit",
"samplerate" : 44100,
"iovs" : 512,
"sigvs" : 64,
"scheduler_in_audio_interrupt" : "off",
"audio_drivername" : "ad_mme",
"audio_driver_subname" : "",
"eventinterval" : 1,
"overdrive" : "off",
"mixerparallel" : "off",
"mixercrossfade" : 0,
"mixerlatency" : 30.0,
"mixerramptime" : 10.0,
"packages" : {
"vizzie" : {
"name" : "vizzie"
}

}

}


May 15, 2014 | 2:11 pm

Hmm. I’ve been trying to fix it with no luck still. Does anyone have any other ideas? Could this be a straight up Java compatibility issue with Windows 8.1 ?


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