Some users of K-IDE sometimes got a crash when starting the K-IDE. I also so such a crash on my notebook but it was very rare.
The reason for this is very hard to find, because it has nothing to do with the source code itself, but with the configuration of the GUI.
I searched throug the internet and found out that the crash has something to do with the initialization of the data grid combined with the "auto-fill" setting for one of the grid columns.
Please take a look at the fix Update 0.9.6.5 20201014 that tries to solve the problem.