Upgrade to Domino 8.5.2 broke my Domino server

Upgrading my Domino servers to 8.5.2. One worked flawlessly, the other reports an error upon completion of the upgrade: error occurred when replacing filesCore with filesCore".After reboot Domino will not start with an error something like “Entrypoint …not found in nnotes.dll.” I might be wrong about the nnotes. From the Event Viewer App log:

Faulting application nservice.exe, Version 8.5.2.10222, faulting module unknown, version 0.0.0.0, fault address 0x00000000.

here is the DominoInstall.log entry that seems to be the error:

STACK_TRACE: 24

ServiceException: (error code = -30018; message = "The requested operation cannot be performed on a file with a user-mapped section open.

(1224)"; severity = 0)

at com.installshield.wizard.platform.win32.Win32FileServiceImpl.win32MoveFile(Native Method)

at com.installshield.wizard.platform.win32.Win32FileServiceImpl.moveFile(Win32FileServiceImpl.java:152)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java(Compiled Code))

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))

at java.lang.reflect.Method.invoke(Method.java(Compiled Code))

at com.installshield.wizard.service.LocalImplementorProxy.invoke(LocalImplementorProxy.java(Compiled Code))

at com.installshield.wizard.service.AbstractService.invokeImpl(AbstractService.java(Compiled Code))

at com.installshield.wizard.service.file.GenericFileService.moveFile(GenericFileService.java:48)

at com.installshield.product.actions.Files.moveFileWithFileService(Files.java:1008)

at com.installshield.product.actions.Files.copyFileWithFileService(Files.java:977)

at com.installshield.product.actions.Files.replace(Files.java(Compiled Code))

at com.installshield.product.service.product.PureJavaProductServiceImpl.replaceProductAction(PureJavaProductServiceImpl.java:1928)

at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.getResultForReplaceProductAction(PureJavaProductServiceImpl.java:5429)

at com.installshield.product.service.product.InstallableObjectVisitor.replaceComponent(InstallableObjectVisitor.java:578)

at com.installshield.product.service.product.InstallableObjectVisitor.visitInstallableComponents(InstallableObjectVisitor.java:335)

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(Thread.java:568)

This is our main mail and app server and our company is basically dead in the water until this is resolved.

thanks in advance.

trey