New TOTALYTD measures not working, all existing ones working fine

Hi,

Does anyone know if there has been any changes to TOTALYTD?

I use this quite extensively and all the measures I already have are working fine, but I any new measures I create do not work.

This measure, created a few weeks ago works fine

YTD Staff Expenses = TOTALYTD(Navision[Total Staff Expenses],'date'[Date],"6/30")

This one created yesterday does not

YTD Non staff expenses = TOTALYTD([Total Non-Staff Expenses],'date'[Date],"6/30")

Any suggestions on how to fix this would be appreciated