Copy protect images and web pages


Cached errors

When using any new program for the first time it is easy to make errors, and those errors can still be delivered even though they have since been corrected, from caching by either your web browser or your ISP. Caching is performed by your web browser to conserve downloads by storing a copy in a Temporary Internet folder or "cache". Caching is also performed by ISPs to conserve their data costs. Pages downloaded by their users are stored by proxy servers or in caching engines so that they can be delivered internally (from within their own network) and thus save the data cost. Some ISPs will enforce caching for days.

Artists and designers need to be aware of this phenomenon because editing a web site can be frustrating if one cannot see the updated pages, but instead see the old pages.

Still getting the same error even though you have made corrections? On refresh you may be getting the latest page in your browser, but not the latest image.class file. This can be due to caching of previous errors by either your browser or your ISP. You can alter your browser settings for refresh, but some proxy connections may not update for days.

When reloading the page, try holding down the "Shift" key at the same time. If this fails then to avoid cached errors you will need to use a different image file name. Renaming the image.class file and modifying the applet's image parameter will save encrypting a new image.

Common errors

  • Java not enabled or not installed – update to Java 1.5
  • Write permissions not enabled on the project folder.
  • Files missing from the viewer template folder – replace from install package.
  • Copysafe project files uploaded by FTP in ASCII format – upload as Binary.
  • Not selecting the alternative image/s in swap-image and slideshow style.

Domain lock error

Java 1.6 has affected the use of encryptions for "multiple sites" which create a domain lock file instead of encrypting the designated key into the image. A workaround is adding .dat to the server's Mimetypes list as ( .dat - plain/text ). However this not recommended as visitors will then be able to download your registration file.

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