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Problem facing with migrating PHPBB to Jforum

 
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Hello All,
I am new for Jforum.While working for migration from PHPBB to Jforum I am getting problem.I got the documentation and follow whatever steps are given there.But I am getting following error

Exception in thread "main" java.lang.NoClassDefFoundError: net/jforum/tools/phpbb2jforum/Main
Caused by: java.lang.ClassNotFoundException: net.jforum.tools.phpbb2jforum.Main
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: net.jforum.tools.phpbb2jforum.Main. Program will exit.

Can anybody help me? Please give me step by step procedure whatever I have to follow.Whatever step I followed just I am mentioning here.
1)Downloaded jforum-2.1.8.zip file
2)Extracted it (Any where.Is it necessary to extract it in webapps?)
3)Changed SystemGlobals.properties file according as document given on site
4)Run through command prompt
Then above mentioned error is showing.Please reply me.

Thanks and regards
Neeraj
[originally posted on jforum.net by neeru1981]
 
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