HTML code exposed on emailed invoice

A customer emailed us this morning requesting new copies of invoices because the two most recent invoices had the HTML exposed, causing what she referred to as "garbage". I see the coding on the email she forwarded to me, but when I forward the original email or select to send a new invoice to myself out of NetSuite, everything looks fine. Any ideas why she would be seeing this if I'm not?

This is what she's getting in her email. The info in the Bill To and Invoice fields is not missing, I've just removed it for privacy.


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You have not defined a password. OK to inherit existing password from other entity with same email?","NLAlertContext._1_LOGIN_HAS_RELATED_ENTITIES_THE_NEW_PASSWORD_WILL_APPLY_TO_ALL_ENTITIES_OK_TO_PROCEED":"login has related Entities. The new password will apply to all Entities. OK to proceed?","NLButtonContext.EXPORT__MICROSOFT_WORD":"Export - Microsoft ® Word","NLFormlabelContext.EDIT":"Edit","NLButtonContext.EXPANDCOLLAPSE_FILTERS":"Expand/Collapse filters","NLButtonContext.EXPORT__TABLEAU_WORKBOOK":"Export - Tableau® Workbook","NLButtonContext.EXPORT__EXCEL_WEB_QUERY":"Export - Excel Web Query","NLAlertContext.EMAIL_ADDRESS_CANNOT_BE_EDITED_HERE_CONTACT_HAS_ACTIVE_LOGINS_EMAIL_CAN_BE_CHANGED_VIA_RELATED_COMPANY_RECORD":"Email address should not be edited here, contact has active logins. If you change email address, user will not be able to log in using NetSuite credentials. Email should be changed via related company record.","NLButtonContext.PRINT":"Print","NLFormlabelContext.EXPAND_ALL":"Expand All","NLAlertContext._1_LOGIN_PASSWORD_CANNOT_BE_CHANGED_THIS_IS_A_CROSS_COMPANY_ACCOUNT_PASSWORD_CAN_ONLY_BE_CHANGED_BY_THE_USER":"login: Only the user can change this password, as this user has access to more than one NetSuite account.","NLButtonContext.EXPORT__PDF":"Export - PDF","NLFormlabelContext.INLINE_EDITING":"Inline Editing","NLPagemessageContext.UNROLLED_VIEW_OFF":"Unrolled view