```ruby
class Speedtao < Cask
  url 'http://www.speedtao.net/download/SpeedTao_Beta26.dmg'
  homepage 'http://www.speedtao.net/'
  version 'Beta26'
  sha256 'c8864775c92f2a92914cdba6b70d67998c484fa3f798715456577cf1704748f3'
  link 'SpeedTao.app'
end
```

Fix checksum in SpeedTao.app Cask
user
```ruby
class Speedtao < Cask
  url 'http://www.speedtao.net/download/SpeedTao_Beta26.dmg'
  homepage 'http://www.speedtao.net/'
  version 'Beta26'
  sha256 '2a1c6a742a4a1e52c2459c0958e3bc2f93f80f4f6977ee35c674b06399502058'
  link 'SpeedTao.app'
end
```
assistant