Activity › Forums › Adobe After Effects › Why is After Effects showing me this error? Adobe After Effects Why is After Effects showing me this error? Posted by Dhiren Behera on May 23, 2024 at 1:49 am Please give me some suggestions on how to fix it. After Effects error: preferences file “Adobe After Effects 23.3 Prefs-effects.txt” is not valid. The file will be renamed with “.old”, and a new preferences file will be created. ( 21 :: 31 ) Dhiren Behera replied 1 year, 11 months ago 2 Members · 2 Replies 2 Replies John Cuevas May 23, 2024 at 1:29 pm Most likely your preferences were corrupted and need to be rebuilt. Dhiren Behera June 5, 2024 at 7:30 am But How To Fix This at Once Reply to this Discussion! Login or Sign Up Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me Reply to this Discussion! Login or Sign Up