Setting some furmulas ina group throws an exception

I would like to add a shape to a group. The inner shapes have some formulas.
When I set the formulas, the Aspose library throws an exception “Object reference not set to an instance of an object.”

See attached project.
TestAsposeVisio.zip (17,3 kB)

@zkormos
Thanks for providing us the project.
After an initial testing, I am able to reproduce the issue as you mentioned by using your template file. It throws exception when setting formula.
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): DIAGRAMNET-53259

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

The issues you have found earlier (filed as DIAGRAMNET-53259) have been fixed in this update. This message was posted using Bugs notification tool by philip.zhou