Either the product is not installed or the release is missing from the list of location targets.
To add the release to the list of location targets so that it can be selected for removal, follow these steps:
Click Back and choose .
In the Installation Preferences window, click the Target List tab and click Add.
In the Select Target dialog box, browse to the release location that you want to add to the target list and click Select Target.
Verify that the target appears in the target list and click Done.
Choose and proceed with the release removal.