Hi Tania,

please follow these steps:

• Make sure you’re Excel version is 15.11 or higher (Excel 2016).

Prio to OSX 10.14:

• Open Excel, open InDesign, wait until both are fully launched, then start MyDataMerge

OSX 10.14 and later:

• Do the same as above. If it doesn’t work, go to the preferences > general and start the “Automation assistant”