I have retired the install/uninstall route several times and it always show it is a successful install. However, it is unusable as not on the screenshot attached.
Help please. By the way it will do the same with or without PMS installed.
We are sorry to hear that you are having problems and we are here to help. The problem that you are experiencing is missing texture files from the Milviz C310 package.
The texture files are packed in the C310, not by us, we have no control over them and we only provide the gauge.
Because of this, we would suggest that you redownload the package installer for the C310, reboot and install the C310 with MSFS closed. Maybe a corruption happened during install/download.