Hobbit 4.0 RC3 - larrd errors

I have problems to see larrd graphs.

I see this error in httpd logs files

/usr/local/hobbit/server/bin/hobbitgraph.cgi: error while loading shared
libraries: librrd.so.0: cannot open shared object file:

In larrd-status.log i see this error

2005-02-23 11:04:31 xfree: Trying to free a NULL pointer2005-02-23 11:04:31
Worker process died with exit code 134, terminating

Core file are generated

any ideas?

thanks

Marco