I'm getting upload failures on three machines so far.

12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Info:  Connected to numberfields.asu.edu (129.219.51.76) port 80 (#191)
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: POST /NumberFields_cgi/file_upload_handler/ HTTP/1.1
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: Host: numberfields.asu.edu
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: User-Agent: BOINC client (windows_x86_64 7.6.22)
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: Accept: */*
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: Accept-Encoding: deflate, gzip
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: Content-Type: application/x-www-form-urlencoded
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: Accept-Language: en_GB
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server: Content-Length: 722
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Sent header to server:
12/05/2016 08:58:23 | NumberFields@home | [http] [ID#108] Info:  We are completely uploaded and fine
12/05/2016 08:59:28 | NumberFields@home | [http] [ID#108] Info:  Operation too slow. Less than 10 bytes/sec transferred the last 60 seconds
12/05/2016 08:59:28 | NumberFields@home | [http] [ID#108] Info:  Closing connection 191
12/05/2016 08:59:28 | NumberFields@home | [http] HTTP error: Timeout was reached
12/05/2016 08:59:28 | NumberFields@home | Temporarily failed upload of wu_sf3_DS-11x271_Grp158560of614400_0_0: transient HTTP error
12/05/2016 08:59:28 | NumberFields@home | Backing off 01:51:48 on upload of wu_sf3_DS-11x271_Grp158560of614400_0_0

The upload appears to complete, but I don't get the necessary acknowledgement that all is well.

LOL - posting about it did the trick. All cleared now.