The last 5 or so times I have gone to install a rolling patch on windows I have run into the errors.

The first problem that comes up do I install a 32 bit or 64 bit Rolling Patch Set.  The answer is, PeopleSoft as of 8.52.xx toolset still uses a 32-bit tuxedo version for Windows.  All other platforms are 64 bit.  So make sure when you download the Rolling Patch that you select 32-bit Windows.

The next problem is that the LaunchAnywhere installer will report that it can’t find the java virtual machine.  Make sure that there is a “java_home”\jdk\bin in your path.  With a Oracle platform there is often a 32 bit jdk home in the product\client folder.  Another option is to set the LAX_VM variable.  For example I just installed RP102 on a new machine and used the following command:

RP102.exe LAX_VM “c:\oracle\product\11.2.0\client_1\jdk\bin\java.exe”

That should solve the problem!