Invalid procedure call or argument: 'Chr'

[mirin]

I have an ASP application running in a Win 2000 server with IIS 5.

I get the error:
Microsoft VBScript runtime error '800a0005'
Invalid procedure call or argument: 'Chr'

on encountering and chr function like in the VBScript statement:
strDecrypted = Chr(iDeCryptChar)

This error only happens when I set the default language to 'Japanese'
in the Regional Options settings for the server. If the default lang
is set to 'English' this error does not happen and the code runs fine.

I need to keep the default lang as 'Japanese' and have the code
recognize the Chr function as well.

Appreciate any advice.

Much Thanks,
Mirin