Unable to install Sample Offer_Counter_User, BaseKit Responsive Website Builder v1.0 or Box v1.2 applications with the following error:
Error downloading package: XPath "/*/*name" cannot be found
Plesk 12 (both Windows and Linux) shows APS 2.0 applications in application catalog.
This is Plesk internal issue #PPPM-1253, which has been fixed in Plesk 12.0.
Apply the latest Plesk microupdates.