Hi Niels
I use the Flight Logger v3.0.7 with FSX without problems.
It detects my FSX version as FSANOTHER, but it record the take off time, landing time....etc.
I used it flying helicopters and it inform me about a penaltie on my climbing rate....eheheh.
I did not make nothing to connect the logger to FSX, just started the FSX and after i started the logger.