URGENT: Opmanager not working anymore!

HELP!!

We experienced an outage of a site which caused the startserver.log of Netflow to grow & grow until we ran out of disk space this weekend.

I was not able to delete this file with all services running. So I:

- stopped all installed products' services (NetFlow Analyzer, ADAudit und OpManager)

- disabled the services

- rebooted the server

- deleted the file (C:\ManageEngine\OpManager\NetFlow\serverstart.log)

- set back all three services to automatic

- rebooted the server again

But now the standard login page doesn't open :( NetFlow and ADAudit are working, but Opmanager is dead.. tryies to open LoginPage.do without success..

The Windows services is running, but when I stop it and try to start it with the batch-file (C:\ManageEngine\OpManager\bin\StartOpManagerServer.bat) it stays open on an error.

Log says: JVM exited unexpectedly.

Another LOG Entry:

Feb 09, 2015 10:06:52 AM org.apache.catalina.core.StandardContext listenerStart

SEVERE: Error configuring application listener of class com.adventnet.ncm.NCMSessionListener

java.lang.ClassNotFoundException: com.adventnet.ncm.NCMSessionListener

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1713)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1558)

at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)

at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)

at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)

at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4823)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5381)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

It seems that tomcat is not able to bring up HTTP services completely.

Netstat -ano doesn't show port 80 in use.

Here is the result of an HTTP query. Seems that the login page is not loaded somehow (Error: website is not available/connection can't be established) .