Google calendar - cannot process commands

Hi there,

I have used google calendar for years without issues. I am not sure when it stopped working actually. I suspect maybe after some of the oh upgrades. Right now I am on 2.5.12 version and here is what I get in logs every time gcal even should be fired:

[WARN ] [gcal.internal.util.ExecuteCommandJob] - Command start not supported

My item in calendar is as follows(nothing special):

start { send Central_Operation_Mode 3 }

Does anyone knows what might be the issue?