Thank you for upgrading to the latest version.
I have analyzed your problem statement and tried to reproduce the same at my end with sample PST file having Calendar entries, but no such exception was raised. The issue seems to be related to specific PST file that you are testing at your end. Please share the sample file with us so that we can investigate the issue at our end and assist you further.
I’ve attached a zip file that has two files in it.
Exception in thread “main” class com.aspose.email.system.exceptions.ArgumentException: Offset or count were out of bounds