Version 1.5.2.1 is broken

I had updated the plugin last night and quickly had to revert back to the old version because at the top of my the_content it echoed out the following (phony addresses for demonstration):
MAIL: [email protected]
MAIL: [email protected]
MAIL: [email protected]
MAIL: [email protected]

{the rest of the content here with properly encoded email addresses}

I viewed the source and these addresses were not even converted to HTML entities.

https://www.ads-software.com/extend/plugins/simple-mail-address-encoder/