I’m having the same problem. I think the issue is with permissions.
The image deploys correctly to /images/dev/PCMAC, but when it finishes, it’s unable to create the folder in /images (FOG create a file instead with fogproject:fogproject owner) and therefore can’t move the files. While capturing the image, in my case, the owner for the /images/dev/PCMAC folder is root:root, while it for /images is fogproject:root. If you change the permissions for /images/dev/PCMAC to fogproject:root WHILE capturing the image, everything works as it should.
I tried to set my /images with root:root an 777 and added the user fogproject to sudoers too, but no luck.
Perhaps this can give the developers a clue about the problem.
Thanks.
Edit: FOG 1.5.10 here