ArgumentException: Offset and length were out of bounds for the array or count is greater than the number of elements from index to the end of the source collection.
ES3Internal.ES3Stream.CreateStream (System.IO.Stream stream, ES3Settings settings, ES3Internal.ES3FileMode fileMode) (at Assets/Plugins/Easy Save 3/Scripts/Streams/ES3Stream.cs:102)
ES3Reader.Create (System.Byte[] bytes, ES3Settings settings) (at Assets/Plugins/Easy Save 3/Scripts/Readers/ES3Reader.cs:348)
ES3File.SaveRaw (System.Byte[] bytes, ES3Settings settings) (at Assets/Plugins/Easy Save 3/Scripts/ES3File.cs:167)
ES3File..ctor (System.Byte[] bytes, ES3Settings settings) (at Assets/Plugins/Easy Save 3/Scripts/ES3File.cs:83)
ES3File.CacheFile (ES3Settings settings) (at Assets/Plugins/Easy Save 3/Scripts/ES3File.cs:355)
ES3.CacheFile (ES3Settings settings) (at Assets/Plugins/Easy Save 3/Scripts/ES3.cs:1049)
ES3.CacheFile (System.String filePath, ES3Settings settings) (at Assets/Plugins/Easy Save 3/Scripts/ES3.cs:1039)
Note that this exception only occurs when the "Encryption" setting in 'AES'. I don't get the problem when I don't use encryption
The issue is likely because you save file contains data which isn’t encrypted, in which case deleting your save data will resolve the issue (Tools > Easy Save 3 > Clear PersistentDataPath).