Greetings,

How did you redefine 'Names'? As it looks like there is currently a limit (A5:A204) for how big the list could be, try this:

In the 'Define Name' dialogm in the 'Refers To:' box for 'Names':

"=OFFSET(Cases!$A$5,0,0,COUNTA(Cases!$A$5:$A$204),1)"

W/O the quotes...

With the above formula defining the named range, the validation seems to work fine to me.

Does that help?

Mark