RHEL7 "Installer User Interface Mode Not Supported"
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RHEL7 "Installer User Interface Mode Not Supported"


Article ID: 94794


Updated On:


CA Application Performance Management Agent (APM / Wily / Introscope) INTROSCOPE


When running the installer for APM10.7.0 on Redhat 7.4, I get the below response.

XMLScriptReader: unable to parse the provided script file.  File may have been invalid...
        at Flexeraan9.am(Unknown Source)
        at Flexeraan9.ak(Unknown Source)
        at Flexeraan9$1.aa(Unknown Source)
        at Flexeraais.ad(Unknown Source)
        at Flexeraan9.ac(Unknown Source)
        at com.zerog.ia.installer.LifeCycleManager.b1(Unknown Source)
        at com.zerog.ia.installer.LifeCycleManager.a8(Unknown Source)
        at com.zerog.ia.installer.LifeCycleManager.au(Unknown Source)
        at com.zerog.ia.installer.LifeCycleManager.consoleInstallMain(Unknown Source)
        at com.zerog.ia.installer.LifeCycleManager.executeApplication(Unknown Source)
        at com.zerog.ia.installer.Main.main(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.zerog.lax.LAX.launch(Unknown Source)
        at com.zerog.lax.LAX.main(Unknown Source)
Unable to load the script.


Installer User Interface Mode Not Supported

Unable to load and to prepare the installer in console or silent mode.



  • 10.7
  • But this could happen in earlier version 10.x as well.
  • Redhat 7.x using Java 1.8.0_112 or higher.  
  • This could also happen with updates between 65 and 112 as well.
  • This was also reproduced on 1.8.0_171.


This is caused by a bug in Java 1.8. Initially tried to reproduce on 1.8.0_65 and did not run into the problem.  Only when upgrading to 1.8.0_171 was the problem reproduced.  In the above situation, it was seen on 1.8.0_112.  In the links below, it states that this was first reported in update 131, however, this has not been verified.

The workaround is to switch back to Utopia fonts in /etc/fonts/local.conf.  Patches in switched the font to STIX.  This doesn't work right with the headless java in OpenJDK.


So all you have to do is create a local.conf in /etc/fonts (if you don't have a file, my system did not.) and enter the text from the second link in there.  Save and exit and re-run the installer.  This should fix the "Installer User Interface Mode Not Supported" error.