thanks for the logs. the odf_SL_plugin.err file indicates that the data being read off the Shake board by the Pi is corrupted. your first check should be to confirm your power source was not damaged during the moments of uneven power, and also to confirm that all connections are firmly in place. the next thing to confirm is that the cable connection between the Shake’s board and the Pi are also firmly seated (all done in a way so as to guarantee no static electricity discharge).
if the problem persists, please provide the log files anew and we will have another look.