If this is an updated site (according to your other question), add the list of outdated plugins you are using. Oh, and PHP version.
I think this is more question for developers on github.
Just note. I have the last 1.0.4 site. I tried to update it some days ago, but when I saw that mess it left there (from old version, not update process, no idea what I can delete, I lost myself in outdated plugins), I decided to go for the new fresh install and I will try to switch to already updated database or move there only needed data.
So my advice: try somewhere (on the same hosting f.e. in subdirectory) fresh install and if it works, you know where is the problem then.