Hello from Spain, Caroline
Sometimes because a ReCap project is big and it has a lot of files, it could be that one or more of them was corrupted.
In order to identificate the issue, I suggest you this:
1- Be sure that your customer has sent you all the files.
2- Request to your customer to sent you the source files if it is possible, that ones generated by the scanner, so you can prevent previous errors. Maybe you can process the original information (That is what is usual to do with customers: send the source files and the procesed ones).
If the issues persist, then could be that the original info generated by the scan could be corrupted. It has happened to me some times, not so many luckly.
I have a Faro Focus scanner and it is highly recommended using high quality and quickest SD cards you can afford, to be able to save safely tha big amount of data generated in each scan.
Also, its recommended not reuse old SD Cards many times. Older SD cards can suffer issues rewriting information. SD cards are today so cheap that it does not worth reuse it many times.
Regards.
Augusto Mora
Architect & teacher of Building Projects at CPIFP Pirámide. Huesca (Spain).
Revit 2014 certified profesional.