Hello,
When loading this .ical file, I get error:
WeekDay can not be converted because of an unexpected value of the Day property:SU,SU.
Seems a bug in specific combinations of BYDAY and WKST parameters.
Also, a grammar thing, maybe you want to change the error string from “can not” to “cannot”, or better, CTRL+H to replace all instances in the project! 
Sample:
rfc5545.zip (1.3 KB)
We will investigate this.
We will keep you informed.
@australian.dev.nerds
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.
Issue ID(s): EMAILNET-41769
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