To Delete Invalid Instance Accelerator Files
1. Click File > Manage Session > Instance Accelerator. The Instance Accelerator dialog box opens.
2. The current instance appears under Instance. To delete the invalid instance accelerator files for the current instance, click Purge. To delete the invalid accelerator files for another instance, navigate to the instance whose accelerator files that you want to delete, and then click Purge.
Purge (in-session generic only) checks the validity of all instance accelerator files on disk and deletes them if they are not current with the generic.