Install Protege5

Protege Desktop 5.0 Beta Installation Instructions

Platform specific instructions

Click on the links below for the platform specific instructions:

Troubleshooting

Q: When I try to run Protege with the run script, I get an UnsupportedClassVersionError, e.g., "Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file"

A: Most likely you have an older Java version installed. Protege requires Java 7 or later. Please see the documentation above on how to check which version of Java is installed on your system.

Q: The Protege UI occasionally freezes on Linux with Open Java. Protege still seems to be running (CPU at normal levels), but I can't click on any of the entities, tabs. or menus.

A: There's a bug in Open Java on Linux distributions (e.g., Ubuntu) with parentless dialogs that will cause this behavior. The workaround is to use another Java implementation, e.g., Oracle Java.

How to get help

If you have problems installing or running Protege Desktop, please refer to the troubleshooting section first. We also recommend searching the mailing list archives, as the problem and a solution might have already been posted.

If you can't find the answers from these resources, send an email to the Protege User Support mailing list (you need to be subscribed to post). Please be as specific as possible and try to include the following items:

• What is your operating system (e.g., OS X 10.9, Windows 7, etc.)?
• What is your Java version?
• What are the specific steps to reproduce the problem?
• Are there any error messages in the console window or the log file?
• What is the observed behavior?

The more detail you provide up front, the more helpful we can be in terms of a prompt response.