We are working on a Content Management System for a customer and we are applying Digital Watermark to protect the customer's photos from unlicensed use. We are using Digimarc MyPictureMarc™.
It has been a frustrating experience for me since the embedded digital mark keeps on disappearing. I embed the digital mark, save and close. When I reopen the file, the digital mark is gone. It does not happen on all the photos but only some of it. It seems like the watermark does not survive at all.
The photos (from screen shots) below should illustrate my point:
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Digimarc Embedded and Verified
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Photo saved. Notice the © symbol in the filename - ©HappyValley1.jpg when it was opened by JASC PaintshopPro
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Closed the file and re-opened.... Digimarc Gone!
We are using an older version of JASC PainshopPro Version 7.04 so the current downloadable Digimarc Plugin does not work. (Separate issue opened with Digimarc). So, we are using the Digimarc interface that comes with our version, seen below:
Another weird thing: Using Digimarc MyPictureMarc Reader, the file: 37oakrd11170303.jpg does not have the digimarc sign.
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Opening it up in JASC,:
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the © symbol is not there. But if one reads the digimarc, it is there:
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These are my Digimarc woes ... 
I wrote Digimarc support to see why this is happening. Keep posted....