Hello,
Using the dualfisheye raw plugin, I created a photo shoot for a client. After connecting the camera to my computer, I noticed that the computer does not show the theta folder. When I manually invoked the USB Transfer option with the camera - ERROR CODE 001 error appears
I have used the camera before, the dualfisheye plugin also. I have never had this problem before. Can I access the plugin files via the cloud? Or how to retrieve my work anyway? Please help 
I don’t normally use the dualfisheye raw plugin. Is the USB transfer a feature of the plug-in?
If you use the Mac File transfer app, can you see the files that you need to download?
If you plug the Z1 into a Windows computer, you may be able to see the folder structure.
The dualfisheye raw plug-in is an independent plug-in. One of the three that are displayed on my camera. I installed it manually using theta software.
Connecting the z1 to the computer - nothing happens. The computer stopped seeing it. Previously, everything worked flawlessly.
I am using Windows PC
When I connect to the camera via WIFI - I can preview the camera files without any problems. The problem is that the photos from the dualfisheye plugin appear in a separate folder on the z1 drive, which is not visible in the application.
maybe the developer has seen this happen before. It might be better to find him on a Facebook Group. There are many Facebook Groups for the RICOH THETA Z1. I’ve seen Yoichi post on this group before:
Ricoh Theta Z1 User Group | Facebook
It’s possible that the files are there and you just need a workaround technique to download them to your computer.
Also, other people may have seen the problem before and be able to help.
Thank you so much for the link 
I’ll post my problem there