Can't open a macro enabled Excel document - Application is busy

[lazloturbine]

I have a pretty simple process. I want to open an Excel workbook with macros and run a macro.

My process looks like this:

1. Start
2. Create Excel Instance
3. Open Workbook
4. Run Macro
5. End

I'm getting an error "Could not execute code stage because exception thrown by code stage: The message filter indicated that the application is busy."

This error only appears when I try to open a .xlsm file. I have tested with an .xlsx file and am able to open the workbook fine.

I have checked to ensure that there are no Excel processes running before I start the process. I have also confirmed that I am able to open the file directly by clicking on it.

Does anyone have any suggestions of what I can do to better troubleshoot?

Thanks.