the javascript script library (which is used by validation code) is not properly installed, open a dos window, runFor the 1.0
%WINDIR%\Microsoft.Net\Framework\v1.0.3705\aspnet_regiis.exe -cFor 1.1:%WINDIR%\Microsoft.Net\Framework\v1.1.4322\aspnet_regiis.exe -c
%WINDIR%\Microsoft.Net\Framework\v1.0.3705\aspnet_regiis.exe -cFor 1.1:%WINDIR%\Microsoft.Net\Framework\v1.1.4322\aspnet_regiis.exe -c
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