SpamSieve repeatedly asks to access Contacts

For the last week or so, every time Mail.app launches, SpamSieve asks for permission to access contacts. I always grant permission, but the next time Mail launches, SpamSieve asks again, ad infinitum.

SpamSieve 2.9.14
Mail 7.3
Mavericks 10.9.3

How do I fix this?

If you’ve modified the SpamSieve application, you’ll need to codesign it or else Mac OS X will keep revoking Contacts access.

Thank you.

I had only modified it by hiding its icon — but not via the Terminal method.

For the benefit of others, the first Terminal command failed to work until I replaced the app with a freshly downloaded copy. All good now. (Fingers crossed.)

Thanks again.

For the latest information about this issue, please see Repeated Access Prompts.