Text Attachments Not Displaying in mail message

I have a text attachment on a incoming mail which is not displaying. There is no attachment icon in the inbox view - when I open the mail there is an attachment box but it does not open.

If I use another mail client like Outlook Express or MSOutlook it displays ok.

Within my preferences I have selected ‘Show Inline MIME messages as attachments’ but it has made no difference.

I have searched through the database but do not find an answer to this problem. However other people have experienced this problem.

If I view Page Source this is the text at the beginning of the attachment.

–=alternative 0054B20980256FEB=–

–=related 0054B20980256FEB=

Content-Type: text/plain; name=“Claims.txt”

Content-Disposition: attachment; filename=“Claims.txt”

Content-Transfer-Encoding: base64