Script Error opening the files in Microsoft Office

Hi there,
In Excel 2010 this error appears when I want to open a Datasheet. I have no idea what a script means or what the solution could be. Can anyone help me please to fix this error ? Is there a possibility to lose everything I have worked ?
Thanks !

And error has occurred in the script on this page.
Line: 2
Char: 258574
Error: Unable to get property ‘$2z_1’ of undefined or null reference
Code: 0
URL: http://cdn.sharepoingonline.com/4738/_layouts15incaccsvcaccessserverscripts.js?rev=vLJ%2BMWEgNyAuk4CpLhzKwQ%#d%3D
Dou you want to continue running scripts on this page ?
Yes No
