"PGN contains illegal moves." when analyze a PGN with a custom FEN

[winapiadmin]

I want to analyze a game (daily puzzle at Chess.com, link at here) but the application show "PGN contains illegal moves." as this screenshot:

[c0nstantly]

You cant start the game with Qxc6+, thus probably making a feature to catch fake games activate

[winapiadmin]

But the custom FEN exists. (maybe your program is not checking SetUp and FEN header)

[WintrCat]

Will see if I can use the FEN header for custom positions