A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hi Sadie,
Thank you for posting your question in this community. Based on your description and screenshot, the problem could be related to your Adobe Acrobat.
First of all, I am not sure which PowerPoint for Mac version you are currently using. If it is not the a latest version, I suggest you can update it to the latest version first for the starter. In addition, you can check PowerPoint for Mac version by clicking on PowerPoint menu > About PowerPoint to find details and share a version with us at your convenience.
For your information:
Update history for Office for Mac
In addition. Did you try to remove Acrobat add-in file from Library folder. Here are some similar threads about this issue. I suggest you can also try out the methods in the following threads to remove Acrobat add-in file in Startup.localized/PowerPoint.
For your information:
New Error: "Run-time error '53'" ... MacPDFM Reply by John
Run-time error '53' Reply by John and Clark
Best regards,
Dihao