DataLink 2014 TagSpec

We just upgraded a computer from DataLink 2013 to DataLink 2014.

Before we had the Server Spec & Tag Spec separate and referenced in a pi call

B1 = MyPiServer,

B2 = MyPiTag

A4-A128 hold MyTimeSpecs

B5 has the formula >> PICalcDat($B$2,$A$4,$A$128,"1d","total", 1, 0,$B$1)

Under DataLink 2013 this returned an array of data

DataLink 2014 returns >>  Invalid object path format for 'PiServers[MyPiServer]'.Parameter name: path

(get this error on 2 computers, works on a third one)

If I make the following changes, it works

B2 = \\MyPiServer\MyPiTag

A4-A128 hold my TimeSpecs

B5 has the formula >> PICalcDat($B$2,$A$4,$A$128,"1d","total", 1, 0)

Has anyone else observed this behavior OR know what the issue might be?

Any feedback would be appreciated.

Thanks