Mango runnee fine V10.0 for a few months.
Last night a powerfailure, restarting the mango server i got this strange error

"OneWireContainer10-Error reading CRC8 from device"
None of th eone wire devices is read out by mango.
this message occurs when going to datapoints one wire and do a scan

I upgraded to V 12.2, still the same problem
i run mango on a ubuntu laptop V10.04LTS

any help will be appriciated