Error while verifying document (F8): "Value cannot be null. Parameter name: source"

Hello everyone!

I'm currently working on SDL Studio 2014 SP2 with a large (+80k words) Word document. The package was created by my client.

When I run the QA (F8), this message appears: Failed to verify document: "Value cannot be null. Parameter name: source"

 

Some data you may find useful:

- The document is only partially translatedso some of the segments are blank

- The original document has lots of images

- The package was created by my client 

 

Can someone tell me what to do or if this ever happened to you as well? Definitely a first for me!

Thanks in advance!

ABD