Hi, I have a similar problem. I installed the 4.2.f version to make the edit online work. I can see the option and it tries to open the MS office doc but gives the following message and the documents doesn't open:
"Some files can harm your computer. If the file information below looks suspicious, or you do not fully trust the source, do not open the file."
I tried on Internet Explorer and Google chrome browser and also changed security settings as suggested by some forums, but nothing works.
I am using MS office 2013.
Thanks.