I'm running into the same problem. I'm using Debian 9 with KDE Plasma First: My c++ / Qt skills are very poor. One problem I figured out on my system, is that on NTFS partitions all files are marked as "executable". The problematic code is in plugin_interface.cpp at line 199ff. Launching files fails with "kstart ", I don't know why. I workarounded this with a dirty hack. IIf there is a file suffix, I use "xdg-open" instead of "kstart: old: if( !info.isExecutable() || info.isDir() ){ /* if more then...