Instance Management Error

Title

Summary

If instance management is enabled, the following error may be seen: Error while checking for instances An error occurred while trying to manage the selected instance.

Synopsis

If instance management is enabled, the following error may be seen:

Error while checking for instances

An error occurred while trying to manage the selected instance.

The following screen capture shows the actual error dialog:

Discussion

Instance Management can be enabled to allow a user to specify whether multiple instances of a product can be installed on the same machine. An installer configured to use the Instance Management feature enables the user to either install a new instance of the product on the machine or modify an existing instance depending on the settings provided at the Project>Advanced>Instance Management section. The above dialog is displayed when a user attempts to modify an existing instance.

The error message is displayed when the installer attempts to modify an existing instance and is able to detect the instance but could not manage the instance. This happens if the uninstaller folder or the entire installation directory of the previous instance is tampered with after the prior installation has completed. For instance, if the installation directory from the prior installation does not exist because the directory was manually removed without doing the proper uninstallation, this will result in the above error message when the user launches the installer launcher again and selects ?Modify an Existing Instance? option.

When modifying an existing instance, the instance management searches the IA global registry ?.com.zerog.registry.xml? to locate the previous instance and then modifies the instance.

Additional Information

For information on the location of the global registry file, refer to the KB article Location of InstallAnywhere Global Registry.

For more information on Instance Management, refer to the HelpNet Documentation link.

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Product

InstallAnywhere

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instance-management-error

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Case id: 00001065