[wp-hackers] Plugin options being cleared on save

[Scott Bressler]

I'm saving a plugin's options into a serialized array. On plugin activation,
I insert a version number into the array, which properly appears when I
check the database. However, when I save the options that I added to the
"Writing" screen (using add_settings_section, add_settings_field, and
register_setting), which let the user change the other two settings in the
serialized array, the version number is removed from the array.

Any idea why the version number is kicked out of the array on first save?

Thanks!

-Scott