Please check if these will help.
https://kb.juniper.net/InfoCenter/index?page=content&id=KB3256
https://kb.juniper.net/InfoCenter/index?page=content&id=KB19954
Also, some important notes mentioned for pre-5.0 ScreenOS: https://kb.juniper.net/InfoCenter/index?page=content&id=KB6126
Hope this helps.
Regards,
-r.
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