10.1.3.3 installation error.

Problem:
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I faced another problem while patching my 10.1.3.1.0 AS instance with 10.1.3.3.0 on Microsoft Windows XP.I've downloaded a patch# 6148874 from metalink for the same.Everything went smooth until BPEL Configuration Assistant fails for some syntactic problem. And because of this problem, I was not able to open the BPEL Console. Everything else seemed to be working fine.
In the Details window in OUI, I got the following error:
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Output generated from configuration assistant "BPEL Configuration Assistant":Files\Java\j2re1.4.2_13\lib\ext\QTJava.zip";C:\Program Files\Rational\ClearQuest\cqjni.jar;C:\Program Files\Java\jre1.6.0_03\lib\ext\QTJava.zip;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\dom4j-1.6.1.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\jaxen-1.1-beta-6.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\jaxme-api-0.3.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\pull-parser-2.1.10.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\tools\xercesImpl-2.6.2.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\tools\jaxme-0.3.jar"=="" was unexpected at this time.

Configuration assistant "BPEL Configuration Assistant" failed ================================================================================================================Output generated from configuration assistant "BPEL Configuration Assistant" (attempt 2) :
Files\Java\j2re1.4.2_13\lib\ext\QTJava.zip";C:\Program Files\Rational\ClearQuest\cqjni.jar;C:\Program Files\Java\jre1.6.0_03\lib\ext\QTJava.zip;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\dom4j-1.6.1.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\jaxen-1.1-beta-6.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\jaxme-api-0.3.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\pull-parser-2.1.10.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\tools\xercesImpl-2.6.2.jar;C:\MAIN\WORK\MyDocs\DOCS\XML\DOM_API\dom4j-1.6.1\lib\tools\jaxme-0.3.jar"=="" was unexpected at this time.
Configuration assistant "BPEL Configuration Assistant" failed
I tried de-installing 10.1.3.1.0 and reinstalling it and patching it again. But no luck.Tried to run BPEL Configuration Assistant using the following commands:1) C:\product\10.1.3.1\OracleAS_1\onfig\eploy_bpel.bat oc4jadmin2) C:\product\10.1.3.1\OracleAS_1\ant\bin\ant -f C:\product\10.1.3.1\OracleAS_1\bpel\system\services\install\ant-tasks\redeploy.xml -Dias_admin.password=oc4jadmin
But got the same error.
Cause:
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One of the classpath entries had space " " in between as in c:\Program Files\qt and was eclosed by quotes.

Solution:
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Remove those entries from the path which contain white spaces. It should work fine.