I've been getting "stack grown too large" errors on a couple of different stock ACS pages. Some I've been able to resolve by doing stupid things.
For instance: /bboard/message-new-2, the URI of the confirm post page, produced this error until I removed code that deals with attachments from simple-message.adp (which is included by message-preview.adp which is used by message-new-2). Here's what I removed (as I say, removing this fixed the problem):
<if @display_attach_p@ nil or @display_attach_p@ ne "f">
<if @id@ not nil and @attachments_p@ not nil and @attachments_p@ ne "f">
<if @attachments:rowcount@ gt 0>
<tr><td><i>Attachment:</i>
<multiple name="attachments">
<a href="attachment?file_id=@attachments.file_id@">@attachments.name@</a> - @attachments.title@
<if @write_p@ not nil and @write_p@ ne "f">
[<a href="attachment-delete?file_id=@attachments.file_id@&message_id=@id@">delete</a>]
</if><br />
</multiple></td></tr>
</if>
</if>
</if>
I've also found this error when I try to add a group. I haven't been able to "fix" that problem though (as I don't really understand the cause of the problem).
Any help would be much appreciated.