If you are getting a white dot it means the X file is missing, or corrupt, or referenced incorrectly, make sure the X file is in the locations being referenced by the FPE and named the same as the FPE. Some of the older FPSC packs had separate folders for meshes and textures so the FPE's specified different folders. Either move the files into the folders it looks for, or change the location in the FPE.
Also a lot of the old FPSC entities shared textures, so the texture files may not always be named the same as the models, if you are going to move them around into their own folders etc, makes sure you have moved copies of all the right textures too,
i7, NV960 4GB, 16GB memory, 2x 4TB Hybrid, Win10.
i5 , AMD 6770 1GB, 8GB memory, 512GB Generic SATAIII + 2TB Seagate Baracuda SATAIII, Win7.
i3, Radeon integrated graphics, 4GB memory, 512gB Generic SATAII, Win8.1.
Q6600, Intel integrated graphics, 2GB memory, 180GB Generic SATAII, WinXP.