OP manager could not start

when i want start op i get a error:
"Failed to establish connection with web server. Gracefully shutting down OpManager."

i saw http://forums.manageengine.com/topic/failed-to-establish-connection-with-web-server-gracefully-s . so i think httpd made this error.

# bin/httpd -k start
bin/httpd: error while loading shared libraries: libaprutil-0.so.0: cannot open shared object file: No such file or directory

[root@www apache]# ldd bin/httpd
    linux-gate.so.1 => (0xffffe000)
    libaprutil-0.so.0 => not found
    libgdbm.so.2 => /usr/lib/libgdbm.so.2 (0xf7fc6000)
    libdb-3.2.so => /lib/libdb-3.2.so (0xf7f1f000)
    libexpat.so.0 => /lib/libexpat.so.0 (0x00c71000)
    libapr-0.so.0 => not found
    librt.so.1 => /lib/librt.so.1 (0x009e3000)
    libm.so.6 => /lib/libm.so.6 (0x008c0000)
    libcrypt.so.1 => /lib/libcrypt.so.1 (0xf7eec000)
    libnsl.so.1 => /lib/libnsl.so.1 (0x00a2a000)
    libdl.so.2 => /lib/libdl.so.2 (0x008ba000)
    libpthread.so.0 => /lib/libpthread.so.0 (0x008e9000)
    libc.so.6 => /lib/libc.so.6 (0x00773000)
    /lib/ld-linux.so.2 (0x00755000)

my system info:

CentOS release 5.2 (Final)
# uname -a
Linux www 2.6.18-92.el5 #1 SMP Tue Jun 10 18:51:06 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux