Bug? Getting error message in latest version (was working before)

"java.io.IOException: read failed, socket might closed or timeout, read ret: -1"

Then trying to connect to a

Seems to connect:
Serial1.Connect(PairedDevices.Get(l.Get(res)))

when executing the command:
textreader1.Initialize(Serial1.InputStream)

I get the error:
"An error has occurred in sub:java.lang.NullPointerExecption"

Please help

Can you post the full error message from the logs?

Note that you should use AsyncStreams with Serial connections.