Unable to run Update Generator

I have tried to run the Update Generator on two machines with the same outcome.
Please could you advise what I am doing wrong, thanks.
Please could you advise what I am doing wrong, thanks.
Starting WSUS Offline Update download (v. 10.4) for w61 glb...
Checking for sufficient file system rights...
Cleaning up existing directories...
Updating static download definitions...
--2016-02-11 13:32:34-- http://download.wsusoffline.net/StaticDownloadLinks-sys
internals.txt
Resolving download.wsusoffline.net... 81.3.27.18
Connecting to download.wsusoffline.net|81.3.27.18|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 159 [text/plain]
Server file no newer than local file `../static/StaticDownloadLinks-sysinternals
.txt' -- not retrieving.
Downloading/validating mkisofs tool...
--2016-02-11 13:32:34-- http://download.wsusoffline.net/mkisofs.exe
Resolving download.wsusoffline.net... 81.3.27.18
Connecting to download.wsusoffline.net|81.3.27.18|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 380416 (372K) [application/x-msdos-program]
Server file no newer than local file `../bin/mkisofs.exe' -- not retrieving.
Downloading Sysinternals' tools Autologon, Sigcheck and Streams...
--2016-02-11 13:32:34-- http://download.sysinternals.com/files/autologon.zip
Resolving download.sysinternals.com... 93.184.221.200
Connecting to download.sysinternals.com|93.184.221.200|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2016-02-11 13:32:34 ERROR 404: Not Found.
--2016-02-11 13:32:34-- http://download.sysinternals.com/files/sigcheck.zip
Reusing existing connection to download.sysinternals.com:80.
HTTP request sent, awaiting response... 404 Not Found
2016-02-11 13:32:34 ERROR 404: Not Found.
--2016-02-11 13:32:34-- http://download.sysinternals.com/files/streams.zip
Reusing existing connection to download.sysinternals.com:80.
HTTP request sent, awaiting response... 404 Not Found
2016-02-11 13:32:34 ERROR 404: Not Found.
ERROR: Download failure for w61 glb.
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