Problems launching ODK aggregate

Michael_Stevens · March 26, 2014, 7:02pm

Exception in thread "main" java.lang.UnsupportedClassVersionError:
com/google/appengine/tools/admin/AppCfg : 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)
---END-SCRIPT-FAILURE---
Press any key to close window . . .

Does anyone have knowledge of a solution to this problem?

Thanks,

Mike

yanokwa · March 26, 2014, 7:37pm

Mike,

Search on this and the dev list for UnsupportedClassVersionError. I
don't remember the specifics, but it's generally an issue of not
having the right Java version installed (or pointed to)

Yaw

···

-- Need ODK services? http://nafundi.com provides form design, server setup, professional support, and software development for ODK.

On Wed, Mar 26, 2014 at 12:02 PM, Michael Stevens michael.stevens.miis@gmail.com wrote:

Exception in thread "main" java.lang.UnsupportedClassVersionError:
com/google/appengine/tools/admin/AppCfg : 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)
---END-SCRIPT-FAILURE---
Press any key to close window . . .

Does anyone have knowledge of a solution to this problem?

Thanks,

Mike

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Johanna · August 10, 2014, 4:15pm

Hi group. I had a similar issue to some others in getting my computer to
point to the updated version of Java. Make sure you are installing the JDK
(developer's kit) rather than JRE (the reader). That solved my problem. You
will know you have the right version when the <java -version> prompt in
your terminal shows version 1.7.x or higher.

···

On Wednesday, March 26, 2014 2:02:12 PM UTC-5, Michael Stevens wrote: > > Exception in thread "main" java.lang.UnsupportedClassVersionError: > com/google/appengine/tools/admin/AppCfg : 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) > ---END-SCRIPT-FAILURE--- > Press any key to close window . . . > > Does anyone have knowledge of a solution to this problem? > > Thanks, > > Mike >

Michael_Stevens · March 26, 2014, 7:57pm

Thanks, Yaw. I just switched to an updated PC and am GTG now!

Best

Mike

···

On Wednesday, March 26, 2014, Yaw Anokwa wrote:

Mike,

Search on this and the dev list for UnsupportedClassVersionError. I
don't remember the specifics, but it's generally an issue of not
having the right Java version installed (or pointed to)

Yaw

Need ODK services? http://nafundi.com provides form design, server
setup, professional support, and software development for ODK.

On Wed, Mar 26, 2014 at 12:02 PM, Michael Stevens <michael.stevens.miis@gmail.com <javascript:;>> wrote:

Exception in thread "main" java.lang.UnsupportedClassVersionError:
com/google/appengine/tools/admin/AppCfg : 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)
---END-SCRIPT-FAILURE---
Press any key to close window . . .

Does anyone have knowledge of a solution to this problem?

Thanks,

Mike

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