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This article applies to CrashPlan PROe version 3.

Code42 Support

PROe Server 3.4.1 Now Only Supports Java 6 Or Later

This article applies to CrashPlan PROe version 3.

CrashPlan PROe version 3.4.1 requires Java version 6 or later.  If an enterprise server is running the CrashPlan PROe server software on Java 5, the upgrade will begin and will be marked as successful, but the enterprise server will not start. Note: CrashPlan PROe server will run with Java 7 installed.


Enterprise servers upgrading to CrashPlan PROe version 3.4 or later from a previous version.

The CrashPlan app is not affected by this issue.


Certain operating systems, including OS X 10.4, are not able to run or install Java 6. Users with enterprise servers running OS X 10.4 or 10.5 must upgrade the enterprise server to a version that supports at least Java 6.

Those that cannot upgrade can continue to use version 3.3.x.x. No upgrade paths will be made available.

Recommended solution

If the PROe Server's host system runs Java 5, upgrade to Java 6.

  1. Download and install Java 6
  2. Upgrade to CrashPlan PROe version
  3. Upgrade to the latest version of CrashPlan PROe

If you have installed CrashPlan PROe version 3.4.1 but cannot upgrade to Java 6 or 7, revert to CrashPlan PROe version 3.3:

  1. Uuninstall CrashPlan PROe from your enterprise server
  2. Reinstall CrashPlan PROe version 3.3
  3. Import a database dump from prior to the 3.4.1 upgrade