How do I begin to troubleshoot aCal? I'm running aCal on my Samsung Galaxy S / Gingerbread and it isn't updating. Adding events pushes them out to my CalDAV server, but I don't see any events.

In aLogcat I see an awful lot of errors:


  W/ActivityManager(  110): Permission Denial: broadcasting Intent { 
  act=android.appwidget.action.APPWIDGET_UPDATE (has extras) } from 
  com.morphoss.acal (pid=11107, uid=10003) requires null due to receiver 
  com.android.settings/com.android.settings.widget.SettingsAppWidgetProvider


and 


  E/aCal DavParserFactory(14157): IO Exception when parsing XML


I can't figure out how much of this is aCal, how much is my phone, and how much is bad data from my CalDAV server (Chandler Hub)
I'm having similar issues on a Kindle Fire with iCloud. One quirky workaround is to open Settings | Servers and disable your server(s). Then re-enable them. That seems to force an update.

Edit:
a) Not sure about all calendars.b) Right, it's a workaround, not a fix. But it address your questions:

"I can't figure out how much of this is aCal,"
Likely most of it, aCal being the one common element in both our observations.

"*how much is my phone, *"Less likely, for the same reason.

"*and how much is bad data from my CalDAV server (Chandler Hub) *"Ditto.