Java issue with OS X 10.10 Yosemite

Symptoms of the problem:

After upgrading OS X to 10.10, Imatest no longer starts

Source of the problem:

A newer version of the java virtual machine can conflict with the version used by Imatest.


  1. Open an OS X terminal window  (hit ⌘-Space 
  2. Enter the following command:
    sudo rm -rf /Library/Java/JavaVirtualMachines/jdk1.8*.jdk
  3. Press return and authorize the change by entering your OS X user password
  4. Download and install the latest Imatest full release (not the upgrade).
  5. Deactivate and reactivate your license. The license manager is found by selecting help>license manager in the tool bar.
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OS X Update leads to License “Already in Use”

When updating to a newer version of OSX, the licensing daemon may need to be reinstalled.

This can be done by:

  1. Accessing the Imatest file downloaded, and rerunning “License Manager Installer.pkg”
  2. Run an offline deactivation, and then reactivate.

If you continue having problems, please contact us at with the issue, and include the offending license number.

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