So impressive how Odoo developers don't come around and respond. Yesterday I did a bunch of imports and today it won't work, showing the following error: unsupported format character '(' (0x28) at index 84 en múltiples filas 

Where is index 84?

The era no "(" characters in the whole file. Tried creating a new file and only copying existing rows/columns, switched all text to General or text format. I have seen mistakes like this all over the web, no response from Odoo Wizards.