Migrating from 7.5 to 8.1 - Table Cell Colours

Ok, starting to make some progress.

The callback doesnt get called when the cell is updated by:
lv_table_set_cell_value(sensorTable, arraypos, 1, buffer);
via
lv_obj_add_event_cb(sensorTable, change_event_cb, LV_EVENT_VALUE_CHANGED, NULL);

It does get called when a cell is clicked.

However, when a cell is clicked it fails with:


Any input would be appreciated.

Thanks!