Thank you very much.
I followed the instructions you gave and there is no CTD in Dublin.
CTD occurred when I first deleted only Scenery index files.
But doing this was successful.
Delete Scenery index files - Run FS2020 - Exit FS2020 - Delete content.xml - Run FS2020 - Exit FS2020 - Restart FS2020 - Load Dublin - Load Perfect.
I succeeded in the above way.
After retrying several times, there was no problem with loading.
Thanks for the good info.
Sorry for my bad english.