App asked me to report so here it is!

[siobhanstunes]

MusicBee v3.0.6335.15398 (Win10.0), 24 Apr 2020 19:58:

System.ArgumentException: Controls created on one thread cannot be parented to a control on a different thread.
   at System.Windows.Forms.Control.ControlCollection.Add(Control value)
   at #=qCVdZFhHBeS5vtAjEpLWUj$rUWTI$yP7$$NgOzAPbpMs=.#=q7_Pxec7d6XDd4zuVsYK_Jg==(Control #=q1fzbqUAEWz_F8ow9Bxxfbg==)
   at #=qeg7Lg7CsFsq2aRsFUSqjyN2ATdgYY$HBFecowUWgNtU=.#=q7_Pxec7d6XDd4zuVsYK_Jg==(Control #=qZReJd8XHy8N_HaQdr6VzTQ==)
   at #=qWGpxxxlHvYYFR7O2xeEIL8_lgImsZGBC4CHIbcnRToA=.#=qULxMVupIHn6HyK7chAJ6FhZ7WEEyFo$6BvID289KxqU=(Boolean #=qj6eRSBbF5k$9gDz0qZyX0A==)
   at MusicBee.MusicBeeMain.#=qKdCMt_10HMpGA6U3TUMPdO5DjWKcELV4HByFP8bCaEw=.#=qULxMVupIHn6HyK7chAJ6FhZ7WEEyFo$6BvID289KxqU=(Boolean #=qv9j64k$6JmG1TasINsxV2Q==)
   at MusicBee.MusicBeeMain.#=qKdCMt_10HMpGA6U3TUMPdO5DjWKcELV4HByFP8bCaEw=.#=q3lUojLmEUVlaLueuRALwUw==()
   at MusicBee.MusicBeeMain.#=qb4JRXMh61Xq5V8GwA5HdKw==(#=q0pi8DO69PL$TSEgw4RaaqkyagsqLWSAY18uDlIlql2c= #=qTl_JKxj5gbjU1G_MwzUfeKobc3GXWoTsP0ZE8rfBsYM=, Boolean #=qs3ZSf4KESxmgcDP8m6eaGRr$IXK05c5HgHBfK6Mi9M4=, #=qE4PpKbP8Z2dIAVpXMR8OcQ== #=qPhQj$2SQ17ijSuqLfOy3ug==, #=qwMXV_TeRemwvMPevRc0xYc0QSANYI7AyjSVqEPUlkyI= #=q2eTjQzZmeE_g2EZdI7PrlkGUUkXGK_DLut$KBD7GXWY=, Boolean #=qBv1vyTTD$oZD_IN$B3Rq$Zk_ClhRifgEkNcqT0wGQrQ=, #=qlq$RRbtCLGXQm$tf3cmgGz$sw46QrH3FkK86b0lPl0o= #=qI4um$SC$nleYepQyHmCR4A==, #=qj76C6uS7W4yhI_C2h2FBO_pbtxR_jgXHCX34nR_dxJo=[] #=q7dJMbqcL3xk$ap5RroB$EEeVw66JMd2lnyCvs37BDvY=, Boolean #=qOQ3vmTxM6hqsDBow_xGoxrTyDxs68ECNURtknJdqcW8=)

[phred]

The version you're using is about four years old. I would suggest getting the latest 3.3 version from the downloads page and then apply the most recent patch, which is available from my sig.