If you are editing a file in a module like module One.Two.Three.Four.Five.E.hs and ghcmod-vim finds an error, if you press enter in the dialog buffer you will be presented with a blank, empty buffer.

I've created a sample haskell project that reproduces this error. You can see the instructions for cloning and reproducing in the repo:

https://github.com/aaronlevin/ghcmod-vim-issue

1. git clone https://github.com/aaronlevin/ghcmod-vim-issue.git && cd ghcmod-vim-issue
2. vim src/One/Two/Three/Four/Five/E.hs
3. in vim, make a change that will cause a compilation failure.
4. go into the dialog buffer and hit enter to go to the line of code that errors. You should be presented with a blank buffer.