2453870 - Starting File2Socket utility returns ant_build\lib does not exist error - SAP Event Stream Processor

When starting the File2Socket utility for the first time, it fails and reports:

send:
     [java] C:\pb\esp51\ESP-5_1\adapters\framework\examples\utils\ant_build\lib does not exist.
     [java]     at org.apache.tools.ant.types.AbstractFileSet.getDirectoryScanner(AbstractFileSet.java:492)
     [java]     at org.apache.tools.ant.types.FileSet.iterator(FileSet.java:69)
     [java]     at org.apache.tools.ant.types.resources.Union.getAllResources(Union.java:148)
     ...
     [java]     at org.apache.tools.ant.Main.runBuild(Main.java:857)
     [java]     at org.apache.tools.ant.Main.startAnt(Main.java:236)
     [java]     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:287)
     [java]     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:113)
     [java] Java Result: -1

SAP Event Stream Processor (ESP) 5.1 SP12

streaming, processing,file2socket,ant_build\lib,esp , KBA , BC-SYB-ESP , Sybase ESP (Event Stream Processor) , Problem