Operating system version {0} is too low. You need at least version {2}

Question

Please can someone tell me what this means?:
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#1.5 #C0000A25023100000000425359C9B9CA0004A51CC6D5CF78#1307442920411#/System/Server/Upgrade/Checks##com.sap.sdt.j2ee.phases.PhaseTypeCheckOSDB.handleReason(PhaseTypeCheckOSDB.java:297)#######Thread[main,5,main]##0#0#Error#1#com.sap.sdt.j2ee.phases.PhaseTypeCheckOSDB.handleReason(PhaseTypeCheckOSDB.java:297)#Java###Operating system version {0} is too low. You need at least version {2}.#4#AMD64 5.2#MSS 10.0.2734#[AMD64 6.0,AMD64 6.0]##
It occurs in the \usr\sap\jupgrade\log\CHECKS.LOG file, when I run the 'General Checks' stage of the' PREPARE Module Status' program.
I am trying to patch a SAP 7.01 SAP Portal to EHP2. The server is running Windows 2003 SP2, MS SQL Server 2008 SP1. I believe that the versions of both the OS and DB are sufficient for EHP2. The upgrade will use a 7.2 kernel and I think that the software versions are sufficient for that too.

Answer 1

I have tried to continue by selecting:
Reselect PREPARE modules to be executed again
and chose Finalization. Then Continue.
But it says:
Module selection is invalid Unable to execute module 'Finalization'. Module 'Finalization' can run only after module 'General checks' has run successfully
Then I ran the General checks module again, but it failed again with the same error.
Please can you suggest how I can proceed?
Thanks.