My mac OS version is Yosemite 10.10.5.
Downloaded trial version dmg file from http://download.haskellformac.com/
And then, tried to open the downloaded file but just raised warning.
Translated into English
These disk images cannot be open.
image | reason
Haskell—FunctionalProgrammingLab.dmg | The image is broken
It does not suppose to me that they may be enough for you to resolve.
How can I capture more detailed logs?