I found that "(sdfcomp-7) failed to open sdf file “whatever.sdo” in read mode is most likely caused by the files residing on a UNC path"
See [source (
http://www.coertvonk.com/technology/logic/quartus-cycloneiv-ne0nano-15932#beforeyoustart)]
--- Quote Start ---
The simulator doesn’t play well with UNC paths (e.g. network shares). It triggers numerous errors and may cause timing simulations to disregard the delays. Keeping the files on the server is fine, for as long as you access them through a symbolic link. Change to your home directory (cd %USERPROFILE%) and create a symbolic link to your file server (mklink /d symlink
\\server\service\path). --- Quote End ---