After compiling the git version of Krusader and executing it in a clean Kubuntu 15.04 virtual machine, Krusader is unable to "browse" a zip file (or a 7z one). However, Krusader is able to "browse" a tar or tar.bz2 file.

The error shown in Krusader when trying to open a file, for example, 
    /home/user/Desktop/user.zip
is
    Error: The directory /home/user/Desktop/user.zip does not exist.
I've checked that that error comes from the file 
    [...]/krusader/VFS/normal_vfs.cpp
from the function
    bool normal_vfs::populateVfsList(const QUrl &origin, bool showHidden)
from this code        
    // check that the new origin exists
    if (!QDir(path).exists()) {
        if (!quietMode)
            emit error(i18n("The directory %1 does not exist.", path));
        return false;
    }
    
Additional information: 
    - When executing 
        /usr/bin/krusader
    Krusader writes
        [...]
        couldn't create slave: "Unable to create io-slave:
        klauncher said: Could not find the 'kio_krarc' plugin.
        
    - The execution of
        find / -xdev -iname "*krarc*" 2>/dev/null
    writes
        /usr/lib/x86_64-linux-gnu/plugins/libkio_krarc.so
        /usr/share/kservices5/krarc.protocol
        /home/user/krusader/krusader-kf5-build/krusader/VFS/CMakeFiles/VFS.dir/krarchandler.cpp.o
        /home/user/krusader/krusader-kf5-build/krusader/VFS/moc_krarchandler.cpp
        /home/user/krusader/krusader-kf5-build/krArc
        /home/user/krusader/krusader-kf5-build/krArc/libkio_krarc.so
        /home/user/krusader/krusader-kf5-build/krArc/moc_krarc.cpp
        /home/user/krusader/krusader-kf5-build/krArc/kio_krarc_automoc.cpp
        /home/user/krusader/krusader-kf5-build/krArc/CMakeFiles/kio_krarc.dir
        /home/user/krusader/krusader-kf5-build/krArc/CMakeFiles/kio_krarc.dir/krarc.cpp.o
        /home/user/krusader/krusader-kf5-build/krArc/CMakeFiles/kio_krarc.dir/kio_krarc_automoc.cpp.o
        /home/user/krusader/krusader-kf5-build/krArc/CMakeFiles/kio_krarc_automoc.dir
        /home/user/krusader/krusader/krusader/VFS/krarchandler.cpp
        /home/user/krusader/krusader/krusader/VFS/krarchandler.h
        /home/user/krusader/krusader/krArc
        /home/user/krusader/krusader/krArc/krarc.protocol
        /home/user/krusader/krusader/krArc/krarc.h
        /home/user/krusader/krusader/krArc/krarc.cpp
    but the execution of the same commmand in a Kubuntu 14.04 with the official Krusader Qt4 packages returns:
        /usr/lib/kde4/kio_krarc.so
        /usr/share/kde4/services/krarc.protocol
    
    - The file
        /home/user/Desktop/user.zip
    is a file, not a directory, of course. Executing
        unzip -l /home/user/Desktop/user.zip
    shows its contents.
    
    - Trying to go with Krusader to that "address"
        krarc:///home/user/Desktop/user.zip
    doesn't work (although the same action works in a Krusader Qt4, under Kubuntu 14.04).        
                    
    - Krusader was compiled and executed with:
        git clone git://anongit.kde.org/krusader 
        cd krusader
        git checkout plasma
        mkdir -p krusader-kf5-build
        cd krusader-kf5-build
        cmake ../krusader -DCMAKE_INSTALL_PREFIX=/usr/ -DCMAKE_C_FLAGS:STRING="-O2 -fPIC" -DCMAKE_CXX_FLAGS:STRING="-O2 -fPIC"
        make
        sudo make install    
                    
    - Maybe the following information won't be very useful, but just in case: the problem of 
        Krusader not being able to "browse" a zip file (or a 7z one), but being able to "browse" a tar or tar.bz2 file
    also happened in that case:
        https://bugs.kde.org/show_bug.cgi?id=294542#c7

I'm available for further testing! Thanks for Krusader!

Reproducible: Always