Since updating, 4.14 will not run when Lowengrin's DCG is used and when the game's DGen is replaced by DCG's DGen. Unchecking DCG's generator does not help, as the game simply will not start anymore, necessitating a re-install.
Not happy about this at all.
Your "kill all third parties" thing is getting ridiculous.
EDIT: Thankfully, there is a workaround. From
Paul's DCG website:
"Okay, it appears 4.14m doesn't like DCG replacing DGEN. And it even doesn't like the DGEN_BAK.EXE sitting in the game folder even after unchecking the option to replace DGEN with DCG (where it automatically copies DGEN back over the DCG imposter). I got around this by deleting DGEN.EXE, starting IL2 and then clicking replace DGEN with DCG. It'll work, but you'll have to do this every time you start IL2."