Fixed intermittent failure when serializing calendars
Fixed intermittent failure when serializing calendars

mrvisser/grasshopper,CUL-DigitalServices/grasshopper,Coenego/grasshopper,Coenego/grasshopper,fronteerio/grasshopper,bp323/grasshopper,Coenego/grasshopper,mrvisser/grasshopper,CUL-DigitalServices/grasshopper,fronteerio/grasshopper,bp323/grasshopper,CUL-DigitalServices/grasshopper,mrvisser/grasshopper,fronteerio/grasshopper