>>Bob,
>>
>>Check out Protection Plus: http://www.softwarekey.com/
>>
>>>Anyone here done a cool LicenseProvider to protect their app, and support enabling modules using an encrypted license file?
>>>
>>>It doesn't look to hard, but some 'from the trenches' advice is welcome!
>>>
>>>BOb
>
>That looks great but $779 is a bit steep.

The Enterprise Version worked for us and is $499. Still expensive, but very flexible. You can see version/pricing differences at http://www.softwarekey.com/plus/pricing.htm