Additional information:
When I explicitly save preferences after initial launch without changing anything, then start SoapUI 5.6.0 form the command line the UI starts and stays up but in the console windows I get to see:
/oraapp/SoapUI-5.6.0/bin/SoapUI-5.6.0
Configuring log4j from [/oraapp/SoapUI-5.6.0/bin/soapui-log4j.xml]
10:07:04,143 INFO [DefaultSoapUICore] initialized soapui-settings from [/home/oracle/soapui-settings.xml]
10:07:04,530 INFO [PluginManager] 0 plugins loaded in 2 ms
10:07:04,530 INFO [DefaultSoapUICore] All plugins loaded
10:07:04,855 INFO [WorkspaceImpl] Loading workspace from [/home/oracle/default-soapui-workspace.xml]
10:07:05,307 INFO [WsdlProject] Loaded project from [file:/home/oracle/xml/AUPatient-soapui-project.xml]
10:07:05,449 INFO [SoapUI] Used java version: 9.0.4
10:07:14,800 INFO [SoapUIUpdateProvider] The update server is unreachable: connect timed out
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.jgoodies.looks.common.RenderingUtils (file:/oraapp/SoapUI-5.6.0/lib/looks-2.2.0.jar) to method sun.swing.SwingUtilities2.drawStringUnderlineCharAt(javax.swing.JComponent,java.awt.Graphics,java.lang.String,int,int,int)
WARNING: Please consider reporting this to the maintainers of com.jgoodies.looks.common.RenderingUtils
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
When I change preferences so that the startup page does not show up, and explicitly save preferences, and stop and start SoapUI I no longer get the exceptions in the previous replay "10:07:14,800 INFO [SoapUIUpdateProvider] The update server is unreachable: connect timed out ..."
And SoapUI still works after that.
