ant从CVS中checkout   程序模块报错

在执行 ant的时候老是报下面的错误
yxmis-check-out:
  [delete] Deleting directory D:\tt\yxmis_zq
      [cvs] Caught exception: CreateProcess: cvs -d:pserver:zxgscvs:@172.16.8.23
1:D:\yxmis checkout yxmis_zq error=2

build.xml 文件
<?xml version="1.0"?> 
<project name="gnt Auto build" basedir="." default="build"> 
 
    <!-- The CVSROOT value --> 
    <property name="cvsroot" value=":pserver:zxgscvs:@172.16.8.231:D:\yxmis"/> 
    <property name="cvs.password" value="zxgscvs"/> 
   
    <property name="yxmis_zq.dir" value="${basedir}/yxmis_zq"/> 
    <property name="yxmis_zq.module.name" value="yxmis_zq"/> 

    <!-- Initializing --> 
    <target name="init"> 
        <tstamp> 
            <format property="today" pattern="yyyy-MM-dd hh:mm:ss"/> 
        </tstamp> 
        <echo message="${today}" /> 
    </target> 
     
    <target name="prepare" depends="init" > 
        <cvspass cvsroot="${cvsroot}" password="${cvs.password}" passfile="ant-cvs.cvspass"/> 
    </target> 
     
    <!-- Retrieve the yxmis_zq module --> 
    <target name="yxmis-check-out" depends="prepare"> 
        <delete dir="${yxmis_zq.module.name}"/>   
        <cvs cvsRoot="${cvsroot}" package="${yxmis_zq.module.name}"   
            passfile="ant-cvs.cvspass"
dest="${yxmis_zq.dir}"/>
    </target> 
 
    <!-- cvs checkout --> 
     
    <target name="check-out"> 
        <antcall target="yxmis-check-out" />   
    </target> 
     
    <target name="build"> 
        <echo message="+=============================================+" /> 
        <echo message="|    Start Building GNT for compilation      |" /> 
        <echo message="+=============================================+" /> 
         
      <!--  <antcall target="ywzcpt-build" />  --> 
        <antcall target="check-out" /> 
         
        <echo message="+=============================================+" /> 
        <echo message="|      End Building GNT for compilation      |" /> 
        <echo message="+=============================================+" /> 
         
    </target>   
   
</project>