I programmed a lot of pcb units via COM port using Your WSD tool (this is our production tool).
Yesterday I checked new software on "production computer no.1 " - a kind of user data encrypted downloader (I did not install the program - only run it - the program didnt change any registers).
Today the "production computer no.1" after restart programs only one pcb unit (trying to program next unit finish with error no.4 code).
To program next pcb unit workers need to restart computer.
Now the workers programs pcb units on "untouchable" - "production computer no.2" - without any problems.
Please explain the "one download WSD behaviour".
Error 4 is just indicating a communications error. can you share a screen shot of the error?