UIM 8.5.1 Upgrade Fails..

Problem:

UIM Up gradation fails from UIM 8.4 SP2 to 8.5.1 and get this error:

 ERROR impl.UIMServerConfigureController:run:492 [Thread-44] - NimException caught
(120) Callback error, Unable to delete file: D:\Program Files (x86)\Nimsoft\probes

Cause:

Trying to upgrade to UIM 8.5.1 and the installer is having an issue at the 79% mark trying to remove these files:
2017-04-07 23:52:41,563 INFO impl.UIMServerConfigureController:removeServiceHostWebapp:3007 [Thread-44] - Removing service_host webapp: ids_services.
2017-04-07 23:52:41,567 ERROR impl.UIMServerConfigureController:run:492 [Thread-44] - NimException caught
(120) Callback error, Unable to delete file: D:\Program Files (x86)\Nimsoft\probes\service\service_host\catalinaBase\webapps\ids_services\WEB-INF\lib\Saxon-HE-9.4.jar: Unable to delete file: D:\Program Files (x86)\Nimsoft\probes\service\service_host\catalinaBase\webapps\ids_services\WEB-INF\lib\Saxon-HE-9.4.jar
at com.nimsoft.install.nimcommon.method.NimMethodCallback.invokeMethod(NimMethodCallback.java:539)
at com.nimsoft.install.nimcommon.method.NimMethodCallback.invokeMethod(NimMethodCallback.java:516)
at com.nimsoft.install.uimserver.action.impl.UIMServerConfigureController.doConfigure_postNMSStartupPackages(UIMServerConfigureController.java:550)
at com.nimsoft.install.uimserver.action.impl.UIMServerConfigureController.doConfigure(UIMServerConfigureController.java:506)
at com.nimsoft.install.uimserver.action.impl.UIMServerConfigureController.run(UIMServerConfigureController.java:490)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Unable to delete file: D:\Program Files (x86)\Nimsoft\probes\service\service_host\catalinaBase\webapps\ids_services\WEB-INF\lib\Saxon-HE-9.4.jar
at org.apache.commons.io.FileUtils.forceDelete(FileUtils.java:2279)
at org.apache.commons.io.FileUtils.cleanDirectory(FileUtils.java:1653)

Resolution:

- Stopped the UIM Installer.

- Open the IM and deleted the Service_host probe.

- Re-run the UIM 8.51 installer

The Functionality for the service_host probe has been moved to wasp, and the probe is no longer installed as part of CA UIM. An address key for the probe still exists in the ump_common section of wasp but is not functional.

What's new in UIM 8.51:-

https://docops.ca.com/ca-unified-infrastructure-management/8-5-1/en/upgrading-release-notes/release-notes