Flashtool can't detect busybox

Well,strange things are happening to my phone...After I managed to get root access,according to Root Checker,I connected my Z5 to the PC but Flashtool doesn't detect Busybox and displays ''Root access denied'' message.Also in Service menu the DRM keys seems intact and the Rooting status is:Bootloader unlock allowed:Yes.

Any idea what is happening?

from xda-developers http://ift.tt/29bQshC
via IFTTT