diff -ur calendar.orig/calendar_ical/calendar-view-ical.tpl.php calendar/calendar_ical/calendar-view-ical.tpl.php
--- calendar.orig/calendar_ical/calendar-view-ical.tpl.php	2008-10-10 16:59:03.000000000 -0400
+++ calendar/calendar_ical/calendar-view-ical.tpl.php	2009-12-26 14:12:18.000000000 -0500
@@ -33,13 +33,13 @@
 BEGIN:VEVENT
 UID:<?php print($event['uid'] . "\n") ?>
 SUMMARY:<?php print($event['summary'] . "\n") ?>
-DTSTAMP;TZID=<?php print $site_timezone ?>;VALUE=DATE-TIME:<?php print($current_date . "\n") ?>
+DTSTAMP:<?php print($current_date . "\n") ?>
 DTSTART;<?php print $event['timezone'] ?>VALUE=DATE-TIME:<?php print($event['start'] . "\n") ?>
 <?php if (!empty($event['end'])): ?>
 DTEND;<?php print $event['timezone'] ?>VALUE=DATE-TIME:<?php print($event['end'] . "\n") ?>
 <?php endif; ?>
 <?php if (!empty($event['rrule'])) : ?>
-RRULE;<?php print($event['rrule'] . "\n") ?>
+<?php print($event['rrule'] . "\n") ?>
 <?php endif; ?>
 <?php if (!empty($event['url'])): ?>
 URL;VALUE=URI:<?php print($event['url'] . "\n") ?>
diff -ur calendar.orig/calendar_ical/theme.inc calendar/calendar_ical/theme.inc
--- calendar.orig/calendar_ical/theme.inc	2009-02-27 09:10:35.000000000 -0500
+++ calendar/calendar_ical/theme.inc	2009-12-26 16:24:58.000000000 -0500
@@ -3,6 +3,13 @@
 /**
  * Preprocess an ical feed
  */
+
+function sanitize_for_ical($input) {
+    $output = preg_replace('/[\n\r]/', ' ', $input);
+    $output = wordwrap($output, 60, "\r\n  ");
+    return $output;
+  }
+
 function template_preprocess_calendar_view_ical(&$vars) {
   global $base_url;
   global $language;
@@ -59,8 +66,8 @@
     $event['summary'] = strip_tags($node->$summary_field);
     $event['start'] = $node->calendar_start_date;
     $event['end'] = $node->calendar_end_date;
-    $event['description'] = !empty($description_field) && !empty($node->$description_field) ? $node->$description_field : '';
-    $event['location'] = !empty($location_field) && !empty($node->$location_field) ? $node->$location_field : '';
+    $event['description'] = !empty($description_field) && !empty($node->$description_field) ? sanitize_for_ical($node->$description_field) : '';
+    $event['location'] = !empty($location_field) && !empty($node->$location_field) ? sanitize_for_ical($node->$location_field) : '';
     $event['url'] = !empty($node->url) ? $node->url : (is_numeric($node->nid) ? url("node/$node->nid", array('absolute' => TRUE)) : $node->nid);
     $event['uid'] = !empty($node->date_id) ? $node->date_id : $event['url'];
     $event['rrule'] = !empty($rrule_field) && !empty($node->$rrule_field) ? $node->$rrule_field : '';