Just tried to install two addons of joomshopping with the Joomla Plugin installer.
Attribute checkbox 1.0.4 (Joomshopping 3.16.0 / 4.4.0 or higher)
and
Minimum order price 1.1.2 (Joomshopping 3.19.0 / 4.7.0), (Joomla 2.5 / 3.x)
I get the error:
"JInstaller: :Install: Die XML-Installationsdatei konnte nicht gefunden werden"
My Joomshopping version: 4.9.2, Joomla 3.3.3