https://bugs.freedesktop.org/show_bug.cgi?id=83906

          Priority: medium
            Bug ID: 83906
          Assignee: libreoffice-bugs@lists.freedesktop.org
           Summary: BASIC: Problem with LanguageTool 2.6 installation
                    com.sun.star.uno.RuntimeException
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: it...@gmx.com
          Hardware: Other
        Whiteboard: BSA
            Status: UNCONFIRMED
           Version: 4.1.1.2 release
         Component: BASIC
           Product: LibreOffice

Problem description: 

Lost of errors during the installation with the extension manager.
Plugin downloaded from:
http://extensions.libreoffice.org/extension-center/languagetool/releases/2.6

Steps to reproduce:
1. Open Extension Manager
2. Click Add... and select LanguageTool-2.6.oxt.
3. Pop-up with error pasted below (1). Attempting to Enable the plugin after
the restart of Libre Office results in pop-ups (2) and (1) again.

Expected behaviour:
1. If there are errors display them in a way that is understandable to the end
user and provide an explanation to how to fix them not this:
https://www.languagetool.org/images/version-error.jpg

Fix:
1. Go to Tools -> Options -> Advanced and choose Oracle Java 1.7. More
explanation can be found on this page:

https://www.languagetool.org/issues/

This link is sadly either not published on the page with the plugin download or
not immediately visible.


(1)
(com.sun.star.uno.RuntimeException) { { Message = "[jni_uno bridge error] UNO
calling Java method writeRegistryInfo: non-UNO exception occurred:
java.lang.UnsupportedClassVersionError: org/languagetool/openoffice/Main :
Unsupported major.minor version 51.0\X000ajava stack
trace:\X000ajava.lang.UnsupportedClassVersionError:
org/languagetool/openoffice/Main : Unsupported major.minor version
51.0\X000a\X0009at java.lang.ClassLoader.defineClass1(Native
Method)\X000a\X0009at
java.lang.ClassLoader.defineClass(ClassLoader.java:634)\X000a\X0009at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)\X000a\X0009at
java.net.URLClassLoader.defineClass(URLClassLoader.java:277)\X000a\X0009at
java.net.URLClassLoader.access$000(URLClassLoader.java:73)\X000a\X0009at
java.net.URLClassLoader$1.run(URLClassLoader.java:212)\X000a\X0009at
java.security.AccessController.doPrivileged(Native Method)\X000a\X0009at
java.net.URLClassLoader.findClass(URLClassLoader.java:205)\X000a\X0009at
java.lang.ClassLoader.loadClass(ClassLoader.java:321)\X000a\X0009at
java.lang.ClassLoader.loadClass(ClassLoader.java:314)\X000a\X0009at
java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:615)\X000a\X0009at
java.lang.ClassLoader.loadClass(ClassLoader.java:266)\X000a\X0009at
com.sun.star.comp.loader.RegistrationClassFinder.find(RegistrationClassFinder.java:55)\X000a\X0009at
com.sun.star.comp.loader.JavaLoader.writeRegistryInfo(JavaLoader.java:399)\X000a",
Context = (com.sun.star.uno.XInterface) @0 } }

(2)
[jni_uno bridge error] UNO calling Java method writeRegistryInfo: non-UNO
exception occurred: java.lang.UnsupportedClassVersionError:
org/languagetool/openoffice/Main : Unsupported major.minor version 51.0
java stack trace:
java.lang.UnsupportedClassVersionError: org/languagetool/openoffice/Main :
Unsupported major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:314)
    at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:615)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at
com.sun.star.comp.loader.RegistrationClassFinder.find(RegistrationClassFinder.java:55)
    at
com.sun.star.comp.loader.JavaLoader.writeRegistryInfo(JavaLoader.java:399)
Operating System: Debian
Version: 4.1.1.2 release

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