installation : cannot modify the label because the text and description are not unique.

Hi All,

I tried to install service tax patch in my local Ax error free instance. I'm gettin the below error. What could be the reason. Please help me to resolve.

<DynamicsAxAutoRun>
<Info>Log file enabled: C:\ProgramData\Microsoft\Dynamics AX\Dynamics AX Setup Logs\2012-12-27 15-41-59\KB2751185-SYP-CONSImportLabels.log</Info>
<Info>XML input file version: </Info>
<Info>Release version: 5.0</Info>
<Info>Launching command: Run</Info>
<Run>
<Info>Class name: SysHotfixManifest - Method: importLabels</Info>
<Error>An error occurred when executing command: Run</Error>
</Run>
<Infolog>
 Cannot modify the label because the text and description are not unique.
</Infolog>
</Infolog>
</DynamicsAxAutoRun>