CiviEvent ICal is not compatible with new Drupal Calendar 2.x Module wich is under development

• • • NOTE *** This issue applies only to Calendar 2.0 for Drupal 5. The rewritten Calendar 2.0 for Drupal 6 module (6x-2.0-rc1) does not currently include any support for iCal feeds and hence can NOT be used to display CiviEvent events.

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Ical in drupal is not compatible with new Calendar release 2.0 which is currently in development. Ical does not parse properly and generates a warning: Invalid argument supplied for foreach() in /public_html/drupal/sites/all/modules/calendar/calendar_ical.module on line 107.

The calendar works fine with ICS files from 2 other sources. THIS IS REPEATABLE in the CIVICRM 2.0 demo sandbox. It seems to be a parsing error related to the way that civi builds the ICS.

See calendar 5.x-2.dev (http://drupal.org/node/92594/release) NOTE this relies on the new Date module in dev also.
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They have completely re-written the Ical parser. It works fine with Google and 2 other Ical services but does not work with Civi 1.9. I thought it could be a permission issue with event registration rights, but I can read the civi Ical directly from the web address (I couldn't verify the ACL on the sandbox 2.0 because I don't have permission.) so I have ruled that out.

I already noted the issue in the module Issue (but I doubt they can test with civi.) This is not a timezone issue, however it was because of the timezone issue that I tried this module. Apparently the 2.dev version will fix the timezone issue.

Copy from Forum Thread (http://forum.civicrm.org/index.php/topic,2368.0.html)