The background, we have installed a new vm server - "log & event management", I use the fixed manager - swi-lem login "log & event management" console, our old Trigeo 5.0 server uses trigeo-companyname as manager (the old name displays and error in success agent installation log below).
Issue: The Nodes picture below describes all nodes connected to the “Log & Event Manager”, I found whatever approaches I use, no any previous version agents (or node IP/name) displays here.
I tried to uninstall previous agent with previous (5.0) remote uninstall management – Failed, as no previous agent was found by the remote uninstall management tool.
Tired to install the last agent followed with guideline on page 10 of user guide. – Success with following log below. But node doesn’t display in “Log & Event Manager”.
Same for uninstall and reinstall the new version agent on old agent existed servers.
By the way, I can’t remove 192.168.201.2 and 192.168.167.1, their logs bothering me a lot, they will appear again after deleted from the nodes list, they are not the IPs we mean to monitor, I'm not sure where they come from, they appears right after the console installation completed.

New Agent installation Success Log with some errors:
Sun Apr 15 18:58:42 CST 2012)
II:NOTICE [NioComNetworkParent v24745] {ComModuleSpop:21} Install request
completed (not installed);
(Sun Apr 15 19:06:42 CST 2012)
II:NOTICE [NioComNetworkParent v24745] {ComModuleSpop:21} Making install
request to: trigeo-companyname;
(Sun Apr 15 19:07:42 CST 2012) EE:ERR
[NioComNetworkParent v24745] {ComModuleSpop:21} EXCEPTION: java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at com.trigeo.core.communications.common.ComNetworkParent.writeMessageToCommandChannel(ComNetworkParent.java:1199)
at com.trigeo.core.communications.common.ComNetworkParent.sendParentViaCommandChannelForResponse(ComNetworkParent.java:327)
at com.trigeo.core.communications.common.ComNetworkParent.installRequest(ComNetworkParent.java:246)
at com.trigeo.core.communications.nio.client.NioComNetworkParent.installRequest(NioComNetworkParent.java:107)
at com.trigeo.core.communications.common.ComModule.autoInstall(ComModule.java:550)
at com.trigeo.core.communications.common.ComModule.setUp(ComModule.java:364)
at com.trigeo.core.communications.spop.ComModuleSpop.run(ComModuleSpop.java:172)
at java.lang.Thread.run(Unknown Source)
at com.trigeo.util.TriGeoThread.run(TriGeoThread.java:57)
--------------------------------------------------------------
(Mon Apr 16 14:15:54 CST 2012)
II:NOTICE [NioComNetworkParent v24745] {ComModuleSpop:21} Install request
completed (not installed);
(Mon Apr 16 14:23:54 CST 2012)
II:NOTICE [NioComNetworkParent v24745] {ComModuleSpop:21} Making install
request to: trigeo-companyname;
(Mon Apr 16 14:24:54 CST 2012) EE:ERR
[NioComNetworkParent v24745] {ComModuleSpop:21} EXCEPTION: java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at com.trigeo.core.communications.common.ComNetworkParent.writeMessageToCommandChannel(ComNetworkParent.java:1199)
at com.trigeo.core.communications.common.ComNetworkParent.sendParentViaCommandChannelForResponse(ComNetworkParent.java:327)
at com.trigeo.core.communications.common.ComNetworkParent.installRequest(ComNetworkParent.java:246)
at com.trigeo.core.communications.nio.client.NioComNetworkParent.installRequest(NioComNetworkParent.java:107)
at com.trigeo.core.communications.common.ComModule.autoInstall(ComModule.java:550)
at com.trigeo.core.communications.common.ComModule.setUp(ComModule.java:364)
at com.trigeo.core.communications.spop.ComModuleSpop.run(ComModuleSpop.java:172)
at java.lang.Thread.run(Unknown Source)
at com.trigeo.util.TriGeoThread.run(TriGeoThread.java:57)
-------------------------------------------------------------
(Mon Apr 16 14:24:54 CST 2012)
II:NOTICE [NioComNetworkParent v24745] {ComModuleSpop:21} Install request
completed (not installed);
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [Contego] {SPOP:8} Starting TriGeo Agent (Release 5.3.1) build
[release];
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [SpopModule v24798] {SPOP:8} build server version string: 5.3.0;
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [InDepthConfigProps v24744] {SPOP:8} nDepth enabled via default
because InDepthEnable not present;
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [InDepthConfigProps v24744] {SPOP:8} indepth.conf not found at
C:\WINDOWS\system32\ContegoSPOP\indepth.conf;
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [RawDataClient v24744] {SPOP:8} Status Inactive;
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [Contego] {SPOP:8} Initializing database;
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [Contego] {SPOP:8} Database Initialized;
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [Contego] {Initialize Communications:10} Initializing Agent
communications;
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [Contego] {Initialize Tools:13} Initializing ToolAPI;
(Mon Apr 16 14:32:19 CST 2012)
WW:STATUS [Communications] Operating System == Windows 2003;5.2;x86
(Mon Apr 16 14:32:19 CST 2012)
II:NOTICE [Contego] {Initialize Tools:13} Initializing FAST;
(Mon Apr 16 14:32:20 CST 2012)
II:NOTICE [NioComNetworkParent v24745] {Initialize Communications:10}
CheckUSBDefender returned installed and running;
(Mon Apr 16 14:32:20 CST 2012)
DD:DEBUG 1 [Communications] Max number of agent install attempt property is not
a numerical value, default to 10
(Mon Apr 16 14:32:20 CST 2012)
II:NOTICE [NioComNetworkParent v24745] {ComModuleSpop:21} Making install
request to: trigeo-companyname;