In my pre-release testing of Vivid, I had trouble opening Kontact and I am so grateful to Piotr who gave the solution. I have found that 100% of all the features that were working in my Utopic version of Kontact all now work in Kontact for Vivid.
If you have upgraded from Utopic to Vivid and are having trouble starting Kontact, I hope the procedures given by Piotr work for you.
If you have upgraded from Utopic to Vivid and are having trouble starting Kontact, I hope the procedures given by Piotr work for you.