Hi All 
Ok so now listen and install carefully.
1)First import the Virus Ti Dark Star .nxp file into nexus2 through desktop import.
2)Then close nexus. ..........READ AGAIN
3)Then put the Xp virus Ti Dark Star presets in the nexus presets folder.
4)Then restart nexus2 and all will be well. ............READ AGAIN
best wishes
fschd1