Solved!
DCS World prevented from opening by browser protector HitmanPro.Alert.
Simply renaming its DLL, hmpalert.dll, in Windows\System 32 does the trick.
Yesterday I purchased Flaming Cliffs 3 from e-Shop and downloaded DCS World.
Installation appeared to be fine until I tried to run DCS World (singleplayer). It didn't. :cry:
DxDiag.txt
I have tried running as Administrator. No joy.
Tried "Repair DCS World" without success.
Anti-virus and firewall is disabled incidentally.
Would appreciate any pointers to a solution ... this has got me beat.
Many thanks in advance.