Problem then running ts Server Dev Edition

Hi, all I installed STS last version and when run TC Dev server have problem

Code:

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Exception in thread "main" java.lang.NoClassDefFoundError: or
Caused by: java.lang.ClassNotFoundException: or
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: or.  Program will exit.

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Ноw fix it.