object creation sample need help...

i have compiled the objectcreation sample that downloaded from sourceforge cvs
and some error occured
please give me some advice to solve this error

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C:\ozone\samples\objectCreation>..\..\build
Win NT/2000/XP build script

Buildfile: build.xml

init:
     [echo] -------- Ozone Object Creation Example --------

prepare:

compile-server:
     [java] Begin OPP...
     [java]    Processing class: office.FloorImpl
     [java]    Begin Processing office.FloorImpl...
     [java]       Begin Resolving update methods...
     [java]          No ocd was found!
     [java]       End Resolving update methods
     [java]       Begin Generating factory for: office.FloorImpl...
     [java]       End Generating factory for: office.FloorImpl
     [java]       Begin Generating proxy for: office.FloorImpl...
     [java]          Upgrading method: setLevel to lock level WRITE
     [java]       End Generating proxy for: office.FloorImpl
     [java]    End Processing office.FloorImpl generated in 2.073 seconds.
     [java]    Generation completed with 0 warnings and 0 errors
     [java]    Processing class: office.MeetingRoomImpl
     [java]    Begin Processing office.MeetingRoomImpl...
     [java]       Begin Resolving update methods...
     [java]          No ocd was found!
     [java]       End Resolving update methods
     [java]       Begin Generating factory for: office.MeetingRoomImpl...
     [java]       End Generating factory for: office.MeetingRoomImpl
     [java]       Begin Generating proxy for: office.MeetingRoomImpl...
     [java]          Upgrading method: setPeopleCapacity to lock level WRITE
     [java]          Upgrading method: setRoomNumber to lock level WRITE
     [java]       End Generating proxy for: office.MeetingRoomImpl
     [java]    End Processing office.MeetingRoomImpl generated in 0.59 seconds.
     [java]    Generation completed with 0 warnings and 0 errors
     [java]    Processing class: office.SiteImpl
     [java]    Begin Processing office.SiteImpl...
     [java]       Begin Resolving update methods...
     [java]          No ocd was found!
     [java]       End Resolving update methods
     [java]       Begin Generating factory for: office.SiteImpl...
     [java]       End Generating factory for: office.SiteImpl
     [java]       Begin Generating proxy for: office.SiteImpl...
     [java]          Upgrading method: setName to lock level WRITE
     [java]          Upgrading method: setAddress to lock level WRITE
     [java]          Upgrading method: setFloor to lock level WRITE
     [java]       End Generating proxy for: office.SiteImpl
     [java]    End Processing office.SiteImpl generated in 0.331 seconds.
     [java]    Generation completed with 0 warnings and 0 errors
     [java]    Processing class: office.PrivateWorkRoomImpl
     [java]    Begin Processing office.PrivateWorkRoomImpl...
     [java]       Begin Resolving update methods...
     [java]          No ocd was found!
     [java]       End Resolving update methods
     [java]       Begin Generating factory for: office.PrivateWorkRoomImpl...
     [java]       End Generating factory for: office.PrivateWorkRoomImpl
     [java]       Begin Generating proxy for: office.PrivateWorkRoomImpl...
     [java]          Upgrading method: setOwner to lock level WRITE
     [java]          Upgrading method: setRoomNumber to lock level WRITE
     [java]       End Generating proxy for: office.PrivateWorkRoomImpl
     [java]    End Processing office.PrivateWorkRoomImpl generated in 0.451 seco
nds.
     [java]    Generation completed with 0 warnings and 0 errors
     [java] End OPP generated in 3.806 seconds.
     [java] Generation completed with 0 warnings and 0 errors
    [javac] Compiling 8 source files to C:\ozone\samples\objectCreation\build\cl
asses

compile-client:
    [javac] Compiling 1 source file to C:\ozone\samples\objectCreation\build\cla
sses
    [javac] C:\ozone\samples\objectCreation\src\OfficeClient.java:45: deleteObje
ct(org.ozoneDB.OzoneRemote) in org.ozoneDB.OzoneInterface cannot be applied to (
java.lang.String)
    [javac]         SiteImplFactory.getDefault().getDatabase().deleteObject(site
1);
    [javac]                                   ^
    [javac] C:\ozone\samples\objectCreation\src\OfficeClient.java:105: cannot re
solve symbol
    [javac] symbol  : method hasNamedObject (java.lang.String)
    [javac] location: class org.ozoneDB.ExternalDatabase
    [javac]         if (db.hasNamedObject(site1)) {
    [javac]               ^
    [javac] C:\ozone\samples\objectCreation\src\OfficeClient.java:107: cannot re
solve symbol
    [javac] symbol  : method deleteObject (java.lang.String)
    [javac] location: class org.ozoneDB.ExternalDatabase
    [javac]             db.deleteObject(site1);
    [javac]               ^
    [javac] 3 errors

BUILD FAILED
file:C:/ozone/samples/objectCreation/build.xml:144: Compile failed; see the comp
iler error output for details.
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thanks