Here's the output log:

Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.

C:\Windows\system32>cd C:\DATA\Unanet

C:\DATA\Unanet>unanet_insert

C:\DATA\Unanet>c:

C:\DATA\Unanet>cd "C:\Program Files (x86)\salesforce.com\Data Loader\bin"

C:\Program Files (x86)\salesforce.com\Data Loader\bin>call process.bat "C:\Progr
am Files (x86)\salesforce.com\Data Loader\samples\conf" UnanetProjectUpsertMap1

2015-02-19 07:15:50,027 INFO  [main] controller.Controller initLog (Controller.j
ava:389) - Using built-in logging configuration, no log-conf.xml in C:\Program F
iles (x86)\salesforce.com\Data Loader\bin\log-conf.xml
2015-02-19 07:15:50,040 INFO  [main] controller.Controller initLog (Controller.j
ava:391) - The log has been initialized
2015-02-19 07:15:50,053 INFO  [main] process.ProcessConfig getBeanFactory (Proce
ssConfig.java:103) - Loading process configuration from config file: C:\Program
Files (x86)\salesforce.com\Data Loader\samples\conf\process-conf.xml
2015-02-19 07:15:50,320 INFO  [main] xml.XmlBeanDefinitionReader loadBeanDefinit
ions (XmlBeanDefinitionReader.java:315) - Loading XML bean definitions from file
 [C:\Program Files (x86)\salesforce.com\Data Loader\samples\conf\process-conf.xm
l]
2015-02-19 07:15:50,443 INFO  [UnanetProjectUpsertProcess] controller.Controller
 initConfig (Controller.java:327) - config dir created at C:\Program Files (x86)
\salesforce.com\Data Loader\samples\conf


2015-02-19 07:15:50,445 FATAL [UnanetProjectUpsertProcess] process.ProcessRunner
 topLevelError (ProcessRunner.java:238) - Unable to run process UnanetProjectUps
ertProcess
java.lang.RuntimeException: com.salesforce.dataloader.exception.ControllerInitia
lizationException: java.io.IOException: Access is denied



        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:112)
        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:100)
        at com.salesforce.dataloader.process.ProcessRunner.main(ProcessRunner.ja
va:253)
Caused by: com.salesforce.dataloader.exception.ControllerInitializationException
: java.io.IOException: Access is denied
        at com.salesforce.dataloader.controller.Controller.initConfig(Controller
.java:340)
        at com.salesforce.dataloader.controller.Controller.<init>(Controller.jav
a:110)
        at com.salesforce.dataloader.controller.Controller.getInstance(Controlle
r.java:212)
        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:110)
        ... 2 more
Caused by: java.io.IOException: Access is denied
        at java.io.WinNTFileSystem.createFileExclusively(Native Method)
        at java.io.File.createNewFile(Unknown Source)
        at com.salesforce.dataloader.controller.Controller.initConfig(Controller
.java:335)
        ... 5 more
2015-02-19 07:15:50,693 INFO  [main] controller.Controller initLog (Controller.j
ava:389) - Using built-in logging configuration, no log-conf.xml in C:\Program F
iles (x86)\salesforce.com\Data Loader\bin\log-conf.xml
2015-02-19 07:15:50,701 INFO  [main] controller.Controller initLog (Controller.j
ava:391) - The log has been initialized
2015-02-19 07:15:50,706 INFO  [main] process.ProcessConfig getBeanFactory (Proce
ssConfig.java:103) - Loading process configuration from config file: C:\Program
Files (x86)\salesforce.com\Data Loader\samples\conf\process-conf.xml
2015-02-19 07:15:50,828 INFO  [main] xml.XmlBeanDefinitionReader loadBeanDefinit
ions (XmlBeanDefinitionReader.java:315) - Loading XML bean definitions from file
 [C:\Program Files (x86)\salesforce.com\Data Loader\samples\conf\process-conf.xm
l]
2015-02-19 07:15:50,919 INFO  [opportunityUpsertProcess] controller.Controller i
nitConfig (Controller.java:327) - config dir created at C:\Program Files (x86)\s
alesforce.com\Data Loader\samples\conf


2015-02-19 07:15:50,922 FATAL [opportunityUpsertProcess] process.ProcessRunner t
opLevelError (ProcessRunner.java:238) - Unable to run process opportunityUpsertP
rocess


java.lang.RuntimeException: com.salesforce.dataloader.exception.ControllerInitia
lizationException: java.io.IOException: Access is denied


        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:112)
        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:100)
        at com.salesforce.dataloader.process.ProcessRunner.main(ProcessRunner.ja
va:253)
Caused by: com.salesforce.dataloader.exception.ControllerInitializationException
: java.io.IOException: Access is denied
        at com.salesforce.dataloader.controller.Controller.initConfig(Controller
.java:340)
        at com.salesforce.dataloader.controller.Controller.<init>(Controller.jav
a:110)
        at com.salesforce.dataloader.controller.Controller.getInstance(Controlle
r.java:212)
        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:110)
        ... 2 more
Caused by: java.io.IOException: Access is denied
        at java.io.WinNTFileSystem.createFileExclusively(Native Method)
        at java.io.File.createNewFile(Unknown Source)
        at com.salesforce.dataloader.controller.Controller.initConfig(Controller
.java:335)
        ... 5 more
2015-02-19 07:15:51,166 INFO  [main] controller.Controller initLog (Controller.j
ava:389) - Using built-in logging configuration, no log-conf.xml in C:\Program F
iles (x86)\salesforce.com\Data Loader\bin\log-conf.xml
2015-02-19 07:15:51,174 INFO  [main] controller.Controller initLog (Controller.j
ava:391) - The log has been initialized
2015-02-19 07:15:51,178 INFO  [main] process.ProcessConfig getBeanFactory (Proce
ssConfig.java:103) - Loading process configuration from config file: C:\Program
Files (x86)\salesforce.com\Data Loader\samples\conf\process-conf.xml
2015-02-19 07:15:51,300 INFO  [main] xml.XmlBeanDefinitionReader loadBeanDefinit
ions (XmlBeanDefinitionReader.java:315) - Loading XML bean definitions from file
 [C:\Program Files (x86)\salesforce.com\Data Loader\samples\conf\process-conf.xm
l]
2015-02-19 07:15:51,390 INFO  [opportunityUpsertProcess] controller.Controller i
nitConfig (Controller.java:327) - config dir created at C:\Program Files (x86)\s
alesforce.com\Data Loader\samples\conf


2015-02-19 07:15:51,392 FATAL [opportunityUpsertProcess] process.ProcessRunner t
opLevelError (ProcessRunner.java:238) - Unable to run process opportunityUpsertP
rocess
java.lang.RuntimeException: com.salesforce.dataloader.exception.ControllerInitia
lizationException: java.io.IOException: Access is denied


        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:112)
        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:100)
        at com.salesforce.dataloader.process.ProcessRunner.main(ProcessRunner.ja
va:253)
Caused by: com.salesforce.dataloader.exception.ControllerInitializationException
: java.io.IOException: Access is denied
        at com.salesforce.dataloader.controller.Controller.initConfig(Controller
.java:340)
        at com.salesforce.dataloader.controller.Controller.<init>(Controller.jav
a:110)
        at com.salesforce.dataloader.controller.Controller.getInstance(Controlle
r.java:212)
        at com.salesforce.dataloader.process.ProcessRunner.run(ProcessRunner.jav
a:110)
        ... 2 more
Caused by: java.io.IOException: Access is denied
        at java.io.WinNTFileSystem.createFileExclusively(Native Method)
        at java.io.File.createNewFile(Unknown Source)
        at com.salesforce.dataloader.controller.Controller.initConfig(Controller
.java:335)
        ... 5 more
C:\Program Files (x86)\salesforce.com\Data Loader\bin>