<div dir="ltr">Hi Maxim<br><br>That is because, you are using old version of XeTeX (probably the one in TL07) and so that version of XeTeX does not know \newXeTeXintercharclass. I am afraid that you should update your entire TeX distribution to TL09 or at least update your XeTeX binary to >=0.997<br>
<br>-- <br>Best wishes,<br>Vafa Khalighi<br>
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