<mt:ArchiveNext type="Monthly">
      <a href="<$mt:ArchiveLink$>"
        title="<$mt:ArchiveTitle escape="html"$>">Next</a>
    <mt:Else>
       <!-- output when no next archive is available -->
    </mt:ArchiveNext>

An error occurred publishing category '3':
Publish error in template 'Category Entry Listing':
Error in tag: error in module Sidebar:
Publish error in template 'Sidebar':
Error in tag: Error in tag:
Error in tag:
error in widget Calendar:
Publish error in template 'Calendar':
Error in tag:
Error in tag:
You used an MTarchiveprevious tag without a date context set up.

Any thoughts?

<h3 class="widget-header">

<mt:ArchivePrevious type="Monthly">
<a href="<$mt:ArchiveLink$>"
title="<$mt:ArchiveTitle escape="html"$>">&laquo;</a>
<mt:Else>
<!-- output when no previous archive is available -->
</mt:ArchivePrevious>

<$mt:Date format="%B %Y"$>

<mt:ArchiveNext type="Monthly">
<a href="<$mt:ArchiveLink$>"
title="<$mt:ArchiveTitle escape="html"$>">&raquo;</a>
<mt:Else>
<!-- output when no next archive is available -->
</mt:ArchiveNext>

</h3>

<div class="widget-content">
<table summary="Monthly calendar with links to daily posts">
<tr>
<th abbr="Sunday">Sun</th>
<th abbr="Monday">Mon</th>
<th abbr="Tuesday">Tue</th>
<th abbr="Wednesday">Wed</th>
<th abbr="Thursday">Thu</th>
<th abbr="Friday">Fri</th>
<th abbr="Saturday">Sat</th>
</tr>
<mt:Calendar>
<mt:CalendarWeekHeader>
<tr>
</mt:CalendarWeekHeader>
<td>
<mt:CalendarIfEntries>
<mt:Entries lastn="1">
<a href="<$mt:EntryPermalink$>"><$mt:CalendarDay$></a>
</mt:Entries>
</mt:CalendarIfEntries>
<mt:CalendarIfNoEntries>
<$mt:CalendarDay$>
</mt:CalendarIfNoEntries>
<mt:CalendarIfBlank>&nbsp;</mt:CalendarIfBlank>
</td>
<mt:CalendarWeekFooter>
</tr>
</mt:CalendarWeekFooter>
</mt:Calendar>
</table>
</div>
</div>
</mt:IfArchiveTypeEnabled>

I just started using MT, and I am going through the same thing trying to create an archive calendar.

This post was very helpful. but I'm now getting an error.

Publish error in template 'Main Index': Error in tag: error in module CalendarArchive: Error in tag: You used an MTarchiveprevious tag without a date context set up.

I'm posting the whole code for anyone who is interested:

<!--module: CalendarArchive-->

<h2>	Archives  </h2>

<div class="module-calendar module">

	<h3 class="module-header">

<caption style="text-align:left;">

                <mt:ArchivePrevious archive_type="Monthly"><a href="<$mt:ArchiveLink$>" title="<$mt:Date format="%B"$>">&laquo;</a> &nbsp; </mt:ArchivePrevious>

                <a href="<$MTBlogArchiveURL$><$mt:Date format="%Y/%m/"$>"><$mt:Date format="%B %Y"$></a>

                <mt:ArchiveNext archive_type="Monthly"> &nbsp; <a href="<$mt:ArchiveLink$>" title="<$mt:Date format="%B"$>">&raquo;</a></mt:ArchiveNext>

            </caption>

</h3>

		<div class="module-content">

			<table summary="Monthly calendar with links to each day's posts">

			<tr>

				<th abbr="Sunday">Sun</th>

				<th abbr="Monday">Mon</th>

				<th abbr="Tuesday">Tue</th>

				<th abbr="Wednesday">Wed</th>

				<th abbr="Thursday">Thu</th>

				<th abbr="Friday">Fri</th>

				<th abbr="Saturday">Sat</th>

			</tr>

			<MTCalendar>

			<MTCalendarWeekHeader>

			<tr>

				</MTCalendarWeekHeader>

					<td>

						<MTCalendarIfEntries>

						<MTEntries lastn="1">

						<a href="<$MTEntryPermalink$>"><$MTCalendarDay$></a>

						</MTEntries>

						</MTCalendarIfEntries>

						<MTCalendarIfNoEntries>

						<$MTCalendarDay$>

						</MTCalendarIfNoEntries>

						<MTCalendarIfBlank>&nbsp;</MTCalendarIfBlank>

					</td>

				<MTCalendarWeekFooter>

			</tr>

			</MTCalendarWeekFooter>

			</MTCalendar>

		</table>

		</div>

</div>

<!--/module: CalendarArchive-->

apologies for the look of the code. for some reason the "pre" tags aren't working?

any tips would be appreciated.

and ya, why aren't the previous/next links part of the regular code?

and one off the cuff question for a MT beginner: What's the difference between a Module and a Widget?

Thanks!

as far as your question, "and one off the cuff question for a MT beginner: What's the difference between a Module and a Widget?", please don't threadjack, or else this thread will get off the topic. please post that in a new thread. thanks.

On top of that, the manual states that type and archive_type are the same modifiers. But they have different results. type produces an out of date context error on individual entries, not on main indexes, archive_type vice versa. In both cases a link to next/previous month should be given, since you specifically request for a monthly context.

This makes the calender function severely limited imo

<mt:If name="datebased_archive">
<div id="next-prev">
<div id="prev"><mt:ArchivePrevious archive_type="Monthly"><a href="<$mt:ArchiveLink$>"><$mt:ArchiveTitle$> »</a></mt:ArchivePrevious></div>
<div id="next"><mt:archivenext archive_type="Monthly"><a href="<$mt:ArchiveLink$>">« <$mt:ArchiveTitle$></a></mt:ArchiveNext></div>
</div>
<mt:else>
<mt:archivelist archive_type="Monthly" lastn="1">
<div id="next-prev">
<div id="prev"><mt:ArchivePrevious archive_type="Monthly"><a href="<$mt:ArchiveLink$>"><$mt:ArchiveTitle$> »</a></mt:ArchivePrevious></div>
<div id="next"><mt:archivenext archive_type="Monthly"><a href="<$mt:ArchiveLink$>">« <$mt:ArchiveTitle$></a></mt:ArchiveNext></div>
</div></mt:archivelist>
</mt:else>
</mt:if>

Works perfectly

No way to create an archive-context in this example right?