There is no problem with using the latest version of the Nikon View software. There are probably small enhancements but probably nothing major. Many times software includes minor enhancements and capability of processing images from new cameras. That's probably why you are having problems with the RAW files from your P7100.
Typically the software included with cameras would not be the latest version. You should go to the Nikon website - Nikon Europe - and download the latest version of View NX2 which is 2.2.5.