"Write to file Failed" - Saving web page as .MHT

I am trying to send a webpage in .MHT format via email. I am using the following code :



body { margin: 0 0 0 0; padding:0 0 0 0 }
td,div { font-family:Tahoma;font-size:8pt;vertical-align:top }
body { margin: 0 0 0 0; padding:0 0 0 0 }
.transcript { background-color:#d2d2d2; }
.messageBlock { margin-left:4px; margin-bottom:3px }
.message { margin-left:100px; word-wrap:break-word; white-space:-moz-pre-wrap; _white-space:pre; }
.messageCont { margin-left:100px; word-wrap:break-word; white-space:-moz-pre-wrap; _white-space:pre;}
.other { color:#39577a;vertical-align:top;font-weight:bold;font-style:normal;float:left; width:95px; }
.myself { color:#da8103;font-style:normal;font-weight:bold;font-style:normal;float:left; width:95px; }
.otherCont { font-size:8px;text-align:right; color:#39577a;font-family:Arial,Lucida Grande;font-style:normal;vertical-align:top;font-weight:bold;float:left; width:95px; }
.myselfCont { font-size:8px;text-align:right; color:#da8103;font-fa ...