Adding new columns to worksheet not working

[jaffacake]

Hi all,

A colleague has asked me to look at a worksheet that isn't allowing him to add any new columns. Currently it goes up to column IV which is well within what i believed the limits of excel 2010 were.

Any pointer on why it won't allow me to add new columns? It's not protected, triggering a macro or complex.

Any help would be appreciated.

 

[VoG]

It needs to be saved in one of the "new" formats - .xlsx or .xlsm

 

[jaffacake]

SO simple. Thanks very much Peter!