Error on El Capitan

[glberen]

This looks like some very useful and fantastic software, but I can't get it to execute on El Capitan:

Receive errors like this when running rem ls :

2015-11-07 16:39:27.399 rem[15163:43163097] [com.apple.calendar.store.log] [Tried to connect to XPC persistence, but connection was invalidated, retrying...]
2015-11-07 16:39:27.399 rem[15163:43163097] [com.apple.calendar.store.log] [Retried too many times, giving up.]
2015-11-07 16:39:27.400 rem[15163:43163097] [com.apple.calendar.store.log] [Couldn't start the XPC store server. [Error Domain=CalPersistenceCreationDomain Code=3 "Could not create XPC connection to the CalendarAgent, connection interrupted or invalidated more than 5 times" UserInfo={NSLocalizedDescription=Could not create XPC connection to the CalendarAgent, connection interrupted or invalidated more than 5 times}]]

Any ideas?

[rlister]

@glberen Are you inside tmux? If so, see #6