Hi Brian & Mark,
Have the same issue as mentioned in this topic I think. Nothing changed in WD but in the last weeks every day it occurs at night.
This is the log from the real time clientraw ftp last night:
Real time Clientraw FTP, vers 9.4 ***Time/date***:3:40:26 23-8-2017 Logging onto SFTP server....sftp.leudalweer.nl OK OK Sending local version: "SSH-2.0-IP*Works! SSH Client v9.0". Read remote version string: "SSH-2.0-SshReverseProxy". Beginning key exchange Preparing algorithm negotiation. Sending local enabled algorithm list. Reading remote enabled algorithm list. Selected key exchange algorithm: "diffie-hellman-group14-sha1". Selected server host key algorithm: "ssh-rsa". Selected client encryption algorithm: "aes256-ctr". Selected server encryption algorithm: "aes256-ctr". Selected client MAC algorithm: "hmac-sha1". Selected server MAC algorithm: "hmac-sha1". Selected client compression algorithm: "none". Selected server compression algorithm: "none". Algorithm negotiation complete. Sending Diffie-Hellman key exchange initialization request. Verifying server's Diffie-Hellman key exchange response. Diffie-Hellman key exchange complete. Calculating key sets. Sending new key packet to server. Setting client keys. Received new key packet from server. Setting server keys. Key exchange complete. Requesting service "ssh-userauth". Service request "ssh-userauth" accepted. Authenticating user for service "ssh-connection". Requesting user's authentication mechanism list from SSH host. Attempting password authentication. Password authentication succeeded. Successfully authenticated user for service "ssh-connection". Attempting to open "session" channel [0]. Successfully opened "session" channel [0]. Attempting to start service "sftp subsystem" on channel [0]. Successfully started service "sftp subsystem" on channel [0]. Negotiated SFTP protocol draft version: 3 Changing to remote directory /www/ SFTP Uploading C:\wdisplay\webfiles\clientraw.txttemp - >clientraw.txttemp C:\wdisplay\webfiles\clientraw.txttemp uploaded ok 3:40:28 Renaming clientraw.txttemp -> clientraw.txt 1103: File rename failed [11]: File already exists. SFTP Uploading C:\wdisplay\webfiles\clientrawextra.txttemp - >clientrawextra.txt C:\wdisplay\webfiles\clientrawextra.txttemp uploaded ok 3:40:28 SFTP Uploading C:\wdisplay\webfiles\clientrawhour.txttemp - >clientrawhour.txt C:\wdisplay\webfiles\clientrawhour.txttemp uploaded ok 3:40:28 SFTP Uploading C:\wdisplay\webfiles\clientrawdaily.txttemp - >clientrawdaily.txt C:\wdisplay\webfiles\clientrawdaily.txttemp uploaded ok 3:40:28 SFTP Uploading C:\wdisplay\webfiles\clientraw.txttemp - >clientraw.txt C:\wdisplay\webfiles\clientraw.txttemp uploaded ok 3:40:33 SFTP Uploading C:\wdisplay\webfiles\clientrawextra.txttemp - >clientrawextra.txt C:\wdisplay\webfiles\clientrawextra.txttemp uploaded ok 3:40:33 SFTP Uploading C:\wdisplay\webfiles\clientrawhour.txttemp - >clientrawhour.txt C:\wdisplay\webfiles\clientrawhour.txttemp uploaded ok 3:40:33 SFTP Uploading C:\wdisplay\webfiles\clientrawdaily.txttemp - >clientrawdaily.txt C:\wdisplay\webfiles\clientrawdaily.txttemp uploaded ok 3:40:33 SFTP Uploading C:\wdisplay\webfiles\customclientraw.txttemp - >customclientraw.txt C:\wdisplay\webfiles\customclientraw.txttemp uploaded ok 3:40:33
…
and so on every 5 seconds, further:
C:\wdisplay\webfiles\customclientraw.txttemp uploaded ok 4:10:33 SFTP Uploading C:\wdisplay\webfiles\clientraw.txttemp - >clientraw.txt C:\wdisplay\webfiles\clientraw.txttemp uploaded ok 4:10:38 SFTP Uploading C:\wdisplay\webfiles\customclientraw.txttemp - >customclientraw.txt C:\wdisplay\webfiles\customclientraw.txttemp uploaded ok 4:10:38 SFTP Uploading C:\wdisplay\webfiles\clientraw.txttemp - >clientraw.txt C:\wdisplay\webfiles\clientraw.txttemp uploaded ok 4:10:43 SFTP Uploading C:\wdisplay\webfiles\customclientraw.txttemp - >customclientraw.txt C:\wdisplay\webfiles\customclientraw.txttemp uploaded ok 4:10:43 SFTP Uploading C:\wdisplay\webfiles\clientraw.txttemp - >clientraw.txt C:\wdisplay\webfiles\clientraw.txttemp uploaded ok 4:10:48 SFTP Uploading C:\wdisplay\webfiles\customclientraw.txttemp - >customclientraw.txt C:\wdisplay\webfiles\customclientraw.txttemp uploaded ok 4:10:48 Logging off from server 4:10:53 OK Doing abort procedure/program close... SFTP Uploading C:\wdisplay\webfiles\clientraw.txttemp - >clientraw.txt OK OK Sending local version: "SSH-2.0-IP*Works! SSH Client v9.0". Read remote version string: "SSH-2.0-SshReverseProxy". Beginning key exchange Preparing algorithm negotiation. Sending local enabled algorithm list. Reading remote enabled algorithm list. Selected key exchange algorithm: "diffie-hellman-group14-sha1". Selected server host key algorithm: "ssh-rsa". Selected client encryption algorithm: "aes256-ctr". Selected server encryption algorithm: "aes256-ctr". Selected client MAC algorithm: "hmac-sha1". Selected server MAC algorithm: "hmac-sha1". Selected client compression algorithm: "none". Selected server compression algorithm: "none". Algorithm negotiation complete. Sending Diffie-Hellman key exchange initialization request. Verifying server's Diffie-Hellman key exchange response. Diffie-Hellman key exchange complete. Calculating key sets. Sending new key packet to server. Setting client keys. Received new key packet from server. Setting server keys. Key exchange complete. Requesting service "ssh-userauth". Logging off from server 4:41:18 OK Logging off from server 5:11:43 Logging off from server 5:42:08 Logging off from server 6:12:34 Logging off from server 6:42:59
… Then nothing more happens.
After button reset:
Received new key packet from server. Setting server keys. Key exchange complete. Requesting service "ssh-userauth". Logging off from server 4:41:18 OK Logging off from server 5:11:43 Logging off from server 5:42:08 Logging off from server 6:12:34 Logging off from server 6:42:59 Real time Clientraw FTP, vers 9.4 ***Time/date***:7:04:42 23-8-2017 Logging onto SFTP server....sftp.leudalweer.nl 143: Busy performing current action.
No further action!
After button stop:
No further action!
Close with cross don’t work.
Close WD save and exit.
RT CR FTP won’t closed and I must reboot the computer and also WD than RT CR FTP works for about one day.
I will try realtime clientraw ftp version 9.8 and let you now if it works for me.
Thanks for the update 
Peter.