I just saw bolt.core in the crash dialog box.
But as of right now would just prefer a refund.
As I said I'll be back using bolt at a later time and hopefully its stable with 2018.
Still will popup as a warning but not a critical(red) error.
Bolt works in 2018.2.1 however it does work with .net4x...
You will need to keep using 3.5 for now.
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