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The following error is returned from "cmd.exe" just after running the LWAinstall.bat file.


set CLASSPATH=;.;.\jdom-1.1.jar;.\LWAInstall.jar :\LWATMP\LWA 2.4>java com.loftware.install.LoftwareWebAccessInstall xception in thread "main" java.lang.UnsupportedClassVersionError: com/loftware/ nstall/LoftwareWebAccessInstall (Unsupported major.minor version 50.0) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at Source) at Source) at$100(Unknown Source) at$ Source) at Method) at Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source) :


Ramifications include:

  • Install fails.
  • No LWAinstall.log file is created.

Potential Causes:

  • Multiple Java versions installed.
  • Oracle is installed on the same machine where the path to JAVA_HOME is not being correctly identified.


Use the set path command prior to running the LWAinstall.bat file to explicitly set the path to the required JRE.

For example:

For 64 Bit Installs:
C:\LWAtmp> set path C:\Program Files\Java\JRE6\bin%PATH%
For 32 Bit Installs: 
C:\LWAtmp> set path C:\Program Files (x86)\Java\JRE6\bin%PATH% 


Article Number



 All LWA versions.


All supported installation environments.

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