Parent application is busy: can't save.

Hello, 

We encountered the following message (shown in the first picture) multiple times when saving a Mathcad file that contains an object from AutoCAD LT 2024 (inserted using the "Insert Option"). After saving and reopening the Mathcad file, the AutoCAD object is deleted, as shown in the second picture.

We found this issue on all machines running Windows 10 & 11.

Kindly advise on how to resolve this matter.

I am using Mathcad Prime Release 11.0 and Datecode11.0.0.0