I have been getting subprocess error messages at random intervals of an hour or so to days using several radio/computer setups including a TS-570S running on a Windows 10 laptop, IC-7300 running on the same laptop and the same IC-7300 running on a Pi3. A typical message is "cannot open WSJT-X/save/210623_1924.wav/.. " The appearance of the error message seems to have no effect at all on WSPR Tx or Rx operation - until I attempt to close the message window when the entire WSJT-X program just shuts down. I have never seen this issue with earlier versions of WSJT. Any ideas on how to deal with this would be appreciated.