RSOP.MSC error: 64 help string specified more than once

Problem：
Got following errors when ran rsop.msc on a XP machine:
1. The latest versions of the adm files below are not available

2. The following error occurred in c:\windows\inf\aer_1044.amd on line 189:
error 64 help string specified more than once
The file can not be loaded.

Resolution:
Actually that's a bug: 574387 - DTS: Installation of .NET Framework causes Multi Language
Administrative Templates to display in RSOP console, you can call Microsoft to check it..
Also, you can follow steps below to resolve your issue:

Since there is no country specific version of .Net Framework 2.0 it
install the adm files for all of the languages supported. In order to only see the
results for US English remove the following adm files.
Search for the files with .adm extension, you may get the result as below.
AER_1025.ADM
AER_1028.ADM
AER_1029.ADM
AER_1030.ADM
AER_1031.ADM
AER_1032.ADM
AER_1035.ADM
AER_1036.ADM
AER_1037.ADM
AER_1038.ADM
AER_1040.ADM
AER_1041.ADM
AER_1042.ADM
AER_1043.ADM
AER_1044.ADM
AER_1045.ADM
AER_1046.ADM
AER_1049.ADM
AER_1053.ADM
AER_1055.ADM
AER_2052.ADM
AER_2070.ADM
AER_3076.ADM
AER_3082.ADM
The only AER_*.adm that needs to be there is AER_1033.adm. The 1033 designation is
the US country code.
So only keep AER_1033.adm file and delete rest of the files, close and reopen
RSOP.


additional information:
Have a look at %windir%\debug\usermode\userenv.log for more info.
If there's not enough info. in that log, enable verbose logging by settingthe following registry value to 30002 (Hex).
HKLM\ Software\ Microsoft\ Windows NT\ CurrentVersion\ Winlogon\UserEnvDebugLevel

Reference reading:
http://www.experts-exchange.com/Software/Server_Software/File_Servers/Active_Directory/Q_23762177.html

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/2003_Server/Q_22628560.html