Cannot Open Exercise files

[kwaku_y]

Hello, 

I am currently doing my pre-work for my Captivate certification and I am having trouble opening the exercise files. I keep getting and error each time I attempt to open the any of the files. Now it will not even open at all. Please below the error message I get.

How do can I fix this?

[Debiprasad_Maharana]

Hi,

Thank you for contacting Adobe Captivate Prime Team. 

The screenshot you have shared is from Adobe Captivate Authoring tool. 

In case you are not able to open the Captivate project file, kindly reach the Captivate support team on the support channels below. 

https://helpx.adobe.com/contact/enterprise-support.other.html#captivate

Kindly let me know if any further assistance is required.
Hope to hear from you soon.

Regards,
Debiprasad Maharana
Adobe Inc.