Analysis for Office 1.4 Inactive save button

Hi experts,

We have a inputable Bex Query to which we connect with Analysis for Office. My problem is that the 'Save Data' button (in the Planning group) is inactive and I cannot save data. I can refresh.

When another user opens this same query via Analysis for Office, his 'Save Data' button becomes active, and he can save data (this is not an authorisation issue as we have SAP ALL).

I have Analysis for Office 1.4 .11.3353

Does anyone have an idea what the issue could be?

Kind regards,

Pieter