Exception:

java.io.FileNotFoundException: C:\Program Files (x86)\VP Suite 4.1\.install4j\files.log (The system cannot find the file specified)
	at java.io.FileInputStream.open(Native Method)
	at java.io.FileInputStream.<init>(Unknown Source)
	at com.install4j.runtime.installer.helper.fileinst.FileLogger.read(Unknown Source)
	at com.install4j.runtime.installer.helper.fileinst.FileInstaller.uninstall(Unknown Source)
	at com.install4j.runtime.beans.actions.UninstallFilesAction.uninstall(Unknown Source)
	at com.install4j.runtime.installer.UninstallerContextImpl.performActionInt(Unknown Source)
	at com.install4j.runtime.installer.ContextImpl.performAction(Unknown Source)
	at com.install4j.runtime.installer.controller.Controller.executeActions(Unknown Source)
	at com.install4j.runtime.installer.controller.Controller.handleCommand(Unknown Source)
	at com.install4j.runtime.installer.controller.Controller.start(Unknown Source)
	at com.install4j.runtime.installer.Uninstaller.main(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
	at com.exe4j.runtime.WinLauncher.main(Unknown Source)

System properties:

java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition
exe4j.moduleName=C:\Program Files (x86)\VP Suite 4.1\uninstall.exe
exe4j.processCommFile=C:\Users\Robin\AppData\Local\Temp\e4j_p3700.tmp
exe4j.semaphoreName=c:_program files (x86)_vp suite 4.1_uninstall.exe
sun.boot.library.path=c:\program files (x86)\vp suite 4.1\jre\bin
java.vm.version=1.5.0_12-b04
java.vm.vendor=Sun Microsystems Inc.
java.vendor.url=http://java.sun.com/
exe4j.consoleCodepage=cp0
path.separator=;
java.vm.name=Java HotSpot(TM) Client VM
file.encoding.pkg=sun.io
user.country=GB
sun.os.patch.level=
install4j.exeDir=C:\Program Files (x86)\VP Suite 4.1\
java.vm.specification.name=Java Virtual Machine Specification
user.dir=C:\Program Files (x86)
java.runtime.version=1.5.0_12-b04
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=c:\program files (x86)\vp suite 4.1\jre\lib\endorsed
os.arch=x86
java.io.tmpdir=C:\Users\Robin\AppData\Local\Temp\
line.separator=

java.vm.specification.vendor=Sun Microsystems Inc.
user.variant=
exe4j.tempDir=
os.name=Windows Vista
sun.java2d.noddraw=true
sun.jnu.encoding=Cp1252
java.library.path=C:\Program Files (x86)\VP Suite 4.1;.;C:\Windows\system32;C:\Windows;C:\Program Files (x86)\VP Suite 4.1\.\.install4j;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\DTS\Binn\;c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files\Common Files\Microsoft Shared\Windows Live;c:\program files (x86)\vp suite 4.1\jre\bin
java.specification.name=Java Platform API Specification
java.class.version=49.0
sun.management.compiler=HotSpot Client Compiler
exe4j.isInstall4j=true
os.version=6.1
user.home=C:\Users\Robin
user.timezone=Europe/London
java.awt.printerjob=sun.awt.windows.WPrinterJob
file.encoding=Cp1252
java.specification.version=1.5
java.class.path=C:\Program Files (x86)\VP Suite 4.1\.install4j\i4jruntime.jar;C:\Program Files (x86)\VP Suite 4.1\.\.install4j\user.jar;
user.name=Robin
java.vm.specification.version=1.0
java.home=c:\program files (x86)\vp suite 4.1\jre
sun.arch.data.model=32
exe4j.launchName=C:\Program Files (x86)\VP Suite 4.1\uninstall.exe
user.language=en
java.specification.vendor=Sun Microsystems Inc.
awt.toolkit=sun.awt.windows.WToolkit
java.vm.info=mixed mode, sharing
exe4j.unextractedPosition=0
java.version=1.5.0_12
java.ext.dirs=c:\program files (x86)\vp suite 4.1\jre\lib\ext
sun.boot.class.path=c:\program files (x86)\vp suite 4.1\jre\lib\rt.jar;c:\program files (x86)\vp suite 4.1\jre\lib\i18n.jar;c:\program files (x86)\vp suite 4.1\jre\lib\sunrsasign.jar;c:\program files (x86)\vp suite 4.1\jre\lib\jsse.jar;c:\program files (x86)\vp suite 4.1\jre\lib\jce.jar;c:\program files (x86)\vp suite 4.1\jre\lib\charsets.jar;c:\program files (x86)\vp suite 4.1\jre\classes
install4j.appDir=C:\Program Files (x86)\VP Suite 4.1\
java.vendor=Sun Microsystems Inc.
file.separator=\
java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi
sun.io.unicode.encoding=UnicodeLittle
sun.cpu.endian=little
sun.desktop=windows
sun.cpu.isalist=