This appears to be an intermittent failure on our side.  I can use the
same recurrence syntax with great success, but I do sometimes receive a
400 response.

Charlie -- code I am able to use to recreate this is below this
message.

Cheers,

-Ryan

---

import com.google.gdata.client.*;
import com.google.gdata.client.calendar.*;
import com.google.gdata.data.*;
import com.google.gdata.data.extensions.*;
import com.google.gdata.data.calendar.*;
import java.net.*;
import java.util.*;

public class TestCW {
  public static void main(String[] args){
    try {
      String user = "r...@ryguy.com";
      String pass = "PASS";
      String calendarUrl =
"http://www.google.com/calendar/feeds/default/private/full";

      String name = "Ryan Boyd";
      String title = "TestCW recurring event";
      String content = "11/22 bug report on groups";

      String crlf = "\r\n";
      String recurString = null;

      recurString = "DTSTART;TZID=GMT:20061114T220000" + crlf +
                    "DURATION:PT3600S" + crlf +
                    "RRULE:FREQ=WEEKLY;INTERVAL=1;BYDAY=TU;WKST=SU";

      URL postUrl = null;

      postUrl = new URL(calendarUrl);

      CalendarEventEntry myEntry = new CalendarEventEntry();
      myEntry.setTitle(new PlainTextConstruct(title));
      myEntry.setContent(new PlainTextConstruct(content));

      Person author = new Person(name, null, user);
      myEntry.getAuthors().add(author);

      Recurrence r = new Recurrence();
      r.setValue(recurString);
      myEntry.setRecurrence(r);

      CalendarService myService =
        new CalendarService("rbtest");
      myService.setUserCredentials(user,pass);

      EventEntry insertedEntry = myService.insert(postUrl, myEntry);
    } catch (Exception ex){
      ex.printStackTrace();
    }
  }