In my case have reinstalled jasper on the same server and trying to import content.
How can I reinstall csk content, tried to install and/or upgrade however it says since ppmjasperadmin user not exists in report server cannot proceed.
admin content-jaspersoft csk -userName superuser -password superuser
admin content-jaspersoft csk -userName superuser -password superuser upgrade
admin content-jaspersoft csk -userName superuser -password superuser upgrade - force