Can't Use "All Tracks & Cars"

So I have installed the game, and a few mods (F1 2010 and the 2018/2019WEC) and when I try to specify that I want to use "All Cars and Tracks" versus select each individual series, they break. They can no longer be used and there are .MAS errors each time. Can someone help me remedy this?
 

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To join the OverTake Racing Club races I want them to be: (multiple choice)

  • Free to access

    Votes: 192 88.1%
  • Better structured events

    Votes: 36 16.5%
  • Better structured racing club forum

    Votes: 29 13.3%
  • More use of default game content

    Votes: 30 13.8%
  • More use of fixed setups

    Votes: 61 28.0%
  • No 3rd party registration pages

    Votes: 74 33.9%
  • Less casual events

    Votes: 18 8.3%
  • More casual events

    Votes: 73 33.5%
  • Other, specify in thread

    Votes: 12 5.5%
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