Screws/Nails Protruding Under Dicor Roof

If the fastener is near an edge of the membrane, it makes a lot of sense to peel back the membrane and deal with the fastener. If the OP doesn't want to go through that work, it may be possible to force the fastener back down in the hole without cutting the membrane. If the fastener will succumb to a hammer blow without tearing the membrane, rolling the membrane back down is all that's needed. If the fastener tears the membrane when forced, a small patch of Eternabond will make everything waterproof again. IMO, it's very difficult for a screw to loosen and puncture the membrane. They tend to push the whole membrane up and the adhesive loosens in that area.

Frankly wrote:
This thing has a 12 year roof warrantee, so I will do as some say and take pictures for now and keep a close watch. It is a year old unit that never sold, and so we just purchased new.

The warantee only covers the actual membrane/roof covering, not damage it something pokes a hole through it from above or below.

Frankly wrote:
If I can't get them to fix it, wouldn't it be better to cut a small slit in the membrane, fix the screw/nail, and then patch with eternabond? Otherwise it looks like the screw/nail could puncture both the membrane and the tape? Or are you thinking this will void the warranty?

True whatever it is could push through both the roof and the eternabond, but I'll bet it's more likely that it won't even penetrate the roof.
If I was real concerned I would slice open just enough to deal with the screw which might mean just removing it and then patch it with a square of Eternabond. If you clean the area well with Acetone and then push the Eternabond down really tightly to squish it, it will probably outlast the camper.

A few years ago my Walmart carried small patches of Eternabond tape in the RV aisle, you might check at yours. It's a bit more per foot that way, but if you only need a few inches it's a much better deal than a whole $50 roll of 50 feet.