install4j Exception error

[Yahya Elyasse]

Hi,
install4j is a commercial tool for creating multi-platform installers for java applications.
i used this tool to create a windows vista installer for my application.
however the uninstaller.exe doesn't work .it gives an error messages and exits uninstallation.

i'm appending the error log below.
please if someone has experience working with install4j , help me fix this error .

thanks.

 Exception:
 
java.io.FileNotFoundException: C:\Program Files\Spark\.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)