when using plasmapkg -t theme -u /home/neoclust/.kde4/share/apps/desktoptheme/G-Remix/metadata.desktop  ( which is a wrong use of the tool i agree )  plasmapkg crash.

this is because archive is set to 0 and not checked before if (archive->open(QIODevice::ReadOnly)) {

this patch fixes this crash

plasmapkg -t theme -u ${the file you want}