slowik21861 posted a topic in POD 2.0, POD XT, Pocket POD, FloorPODsI am using POD XT since 2006 as interface for connecting my guitar to computer. Everything has been worked fine under Windows and on Mac until upgrade to OS X 10.11 El Capitan. From time to time there was a message about communication errors with device in driver configuration window. Because there was no "Repair permissions" option in Disk Utility, I have used "/usr/libexec/repair_packages" command in Terminal. Week ago I made clean install of macOS Sierra 10.12.3 and updated to 10.12.4. Communication problem still appears. There is no low-level tools to repair file permissions in macOS Sierra. How can I fight with this errors? I have MacBook Pro 15 mid 2014 with powerful CPU, enough RAM and fast SDD. There is no special software installed. Only Logic Pro X and iWork. Everything is updated to the newest versions.