I already re-compiled the report-generator.jar and copied it to the right place.
When I execute the command line statements all works fine.
The Generator class returns the value 0.

When I try to do the same in Java Console or Web UI,
I get the message "Report generator failed to start" and nothing happens.
There is no additional debugging output from the server.
The return value of the Generator class is 0 again.
But as I said, the job is not marked as finished successfully.

Do you have an idea of what goes wrong?

Here is my netxmsd.conf:

DBDriver = /usr/lib/libnxddr_mysql.so
DBServer = localhost
DBName = netxms
DBLogin = netxms
DBPassword = *******

LogFailedSQLQueries = yes
LogFile = /var/log/netxms

JavaPath = /usr/lib/jvm/java-7-oracle/bin/java
JavaLibraryDirectory = /opt/netxms/java-lib
JDBCDriver = com.mysql.jdbc.Driver
JDBCUrl = jdbc:mysql://localhost/netxms

DataDirectory = /usr/share/netxms

Thanks for your help!