Hi Dan,

If first day of weekly recurrence is Sunday, then 'System.OutOfMemoryException' was thrown. Please find a simple project attached.

Also if I replaced code

RecurrenceRule rule = RecurrenceRule.FromDateTime("1", start).Weekly().Until(start.AddYears(1));

with

RecurrenceRule rule = RecurrenceRule.FromDateTime("1", start).Weekly().Times(5);

then all events are generated in one day

All works fine if first day is Monday, Tuesday, Wednesday etc.