HomeFacilitiesCoral Troubleshooting FAQs

Coral Troubleshooting FAQs

Pre-Startup Issues

Missing Desktop Shortcut

If you are unable to find a shortcut for “CCMR Coral Remote” on your desktop, you can load Coral by directly visiting the CCMR Coral Remote site. When the application starts, it will create a desktop shortcut for you if one does not exist.

Clicking on the Desktop Shortcut does not start Coral

Clear the Java cache, following instructions listed on the Java web site. Next, reload CCMR Coral Remote.

Trouble downloading Coral

If your browser prompts you to Open with Java(TM) Web Start Launcher then you have an Oracle Java Runtime Environment (JRE) installed and can proceed with the download. If not, you will need to download Java first. After Coral is downloaded it will show a security warning (click Run) and then a Login box. If you do not get the login box, see the “Unable to make secure connectionsection below.

Updating Java

Before downloading Coral, you need to have first installed a recent version of the Java SE Runtime Environment (JRE). If your machine doesn’t already have Java, you can get it from the Free Java Download link at Sun’s Java website. Coral runs as a Java Web Start application. Java Web Start is part of the JRE installation.

Unable to make secure connection

If Coral fails to start with the message: Unable to make secure connection, then you most likely have Java version 1.6.0_14 installed, which does not work properly with Coral. You can check what version of Java you have by checking Sun’s Do I have Java? page. If you have 1.6.0_14 then you will need to upgrade to a newer version.

Using Coral from behind a firewall

If you are behind a very restrictive firewall you may have trouble connecting to the Coral server. If this is the case, you will need to ask your firewall administrator to open ports 50000 through 50014 for you.

Post-Login Error Messages

Login window keeps popping up after clicking “OK”

Your username and password combination is failing authentication. If you have forgotten your password and are an internal user, follow CIT’s instructions to reset your password. If you are external user, email the Coral Administrator to request a password reset.

Empty Service Ticket Error

If you see an error message that says “Please contact lab staff for assistance. (empty service ticket error)”, email the Coral Administrator with a non-expired project and account to associate with your user profile.

Equipment tree looks unfamiliar, or an expected item is not found

If the Coral equipment or supply tree looks different from what you expected, ensure that you ran CCMR Coral Remote, and not CNF Coral. Both applications have similar icons on the desktop; however, CCMR’s version is explicitly titled “CCMR Coral Remote”.

System clock is far off

After logging in with your username and password, if you see an error message that says “Your system time is too far off from the authentication server. Please ensure your system clock is accurate.”, you need to set your system clock and time zone accurately. Follow the appropriate instructions for Windows, Mac OS, and Linux.

Other Error Messages

Hardware Manager returned a value that exceeds limits

If, while disabling or enabling an equipment item, you see an error message that says “Hardware manager returned a value that exceeds limits”, there is a communication error between one of the underlying Coral components (the interlock server) and the Coral interlock that is responsible for the equipment in question.

To resolve this issue, simply retry the disable or enable operation; the interlock server will re-establish the broken connection and perform the operation requested. If retrying the operation does not resolve the problem, contact the Facility Manager.

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