Accurev Plugin ANT script errors

The ant build script for the Accurev plug-in has been heavily modified in the latest version from: http://svn.jetbrains.org/teamcity/plugins/accurev-vcs/trunk.

The modifications are non-trivial and cause the build to fail with error message:

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Buildfile: build.xml

check.teamcitydistribution:

BUILD FAILED

C:\projects\accurev\TTBuilder_Trunk\buildapi\projects\AccurevTeamCityPlugin\teamcity-common.xml:161: Cannot find TeamCity distribution at path 'teamcity-dist/'. The property 'teamcity.distribution' or 'path.variable.teamcitydistribution' should point to unpacked TeamCity .tar.gz or .exe distribution.

Total time: 0 seconds

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I have tried removing the ant targets which seemed unnecessary but this only yields more errors.

I am not an ANT expert and have no idea how to fix it.

Thanks