mini-notation syntax error causes stream to freeze

[miranda]

sometimes, a syntax error in the mini-notation causes the stream thread to freeze. an example of a pattern that causes this is:

d1 $ stack
  [ (1/16) ~> s "ride*4"
  , n "<0 1 2§>*16" # s "808" -- note the invalid '§'
  ]

after this, there is no sound even if i evaluate a valid block like d1 $ s "bd*4".

[Alex McLean]

Great thanks!