Install in windows: please help

I am try to install opencascade in win XP and when the instalation is about to finish I have an error with the following log:

(Mar 1, 2007 7:35:31 PM), Install, com.installshield.wizard.platform.win32.Win32RegistryException, err, Error while processing registry file C:\Documents and Settings\FulanodeTal\Meus documentos\Victor\Downloads\open\win32\setup.jar+/c88d9316cd259c34faaeb08b9cf61691/win32reg/r_EXPLORERPLUGINREGISTRY_WIN_01/DocumentExtension.reg
(Mar 1, 2007 7:35:31 PM), Install, com.installshield.wizard.platform.win32.Win32RegistryUpdate, err, ProductException: (error code = 601; message="O sistema não pode encontrar o arquivo especificado.
(2) Error on line 47")
STACK_TRACE: 13
ProductException: (error code = 601; message="O sistema não pode encontrar o arquivo especificado.
(2) Error on line 47")
at com.installshield.wizard.platform.win32.Win32RegistryUpdate.install(Win32RegistryUpdate.java:101)
at com.installshield.product.service.product.PureJavaProductServiceImpl.installProductAction(PureJavaProductServiceImpl.java:1916)
at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.getResultForProductAction(PureJavaProductServiceImpl.java:5195)
at com.installshield.product.service.product.InstallableObjectVisitor.visitComponent(InstallableObjectVisitor.java:369)
at com.installshield.product.service.product.InstallableObjectVisitor.visitInstallableComponents(InstallableObjectVisitor.java:333)
at com.installshield.product.service.product.InstallableObjectVisitor.visitProductBeans(InstallableObjectVisitor.java:133)
at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.install(PureJavaProductServiceImpl.java:4563)
at com.installshield.product.service.product.PureJavaProductServiceImpl$Installer.execute(PureJavaProductServiceImpl.java:3758)
at com.installshield.wizard.service.AsynchronousOperation.run(AsynchronousOperation.java:41)
at java.lang.Thread.run(Unknown Source)

(Mar 1, 2007 7:35:32 PM), Install, com.installshield.wizard.platform.win32.Win32RegistryUpdate, err, An error occurred and product installation failed. Look at the log file C:\Arquivos de programas\OpenCascade\log.txt for details.
(Mar 1, 2007 7:35:32 PM), Install, com.installshield.wizard.platform.win32.Win32RegistryUpdate, err, ProductException: (error code = 601; message="O sistema não pode encontrar o arquivo especificado.
(2) Error on line 47")
STACK_TRACE: 13
ProductException: (error code = 601; message="O sistema não pode encontrar o arquivo especificado.
(2) Error on line 47")
at com.installshield.wizard.platform.win32.Win32RegistryUpdate.install(Win32RegistryUpdate.java:115)
at com.installshield.product.service.product.PureJavaProductServiceImpl.installProductAction(PureJavaProductServiceImpl.java:1916)
at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.getResultForProductAction(PureJavaProductServiceImpl.java:5195)
at com.installshield.product.service.product.InstallableObjectVisitor.visitComponent(InstallableObjectVisitor.java:369)
at com.installshield.product.service.product.InstallableObjectVisitor.visitInstallableComponents(InstallableObjectVisitor.java:333)
at com.installshield.product.service.product.InstallableObjectVisitor.visitProductBeans(InstallableObjectVisitor.java:133)
at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.install(PureJavaProductServiceImpl.java:4563)
at com.installshield.product.service.product.PureJavaProductServiceImpl$Installer.execute(PureJavaProductServiceImpl.java:3758)
at com.installshield.wizard.service.AsynchronousOperation.run(AsynchronousOperation.java:41)
at java.lang.Thread.run(Unknown Source)
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Obs: "O sistema não pode encontrar o arquivo especificado." = "The system cannot find the archive specified"

does anyone ever see that?
please help

thanks in advance