If the manual protein.dll install fails, the core issue might be missing or DirectX 9.0c runtime.
Typically, for the 2013 version, this is: C:\Program Files (x86)\MAGIX\Video_deluxe_2013_Plus\ magix video deluxe 2013 plus protein dll download install
: If the original download manager fails (common with older software), contact Magix support at infoservice@magix.net to request a direct installer link. If the manual protein
Check antivirus/quarantine