>On a few of my projects Encryption had been turned on. Now, I wish to turn it off. Strangely when I open the project info, uncheck the encryption checkbox then recompile the project. Once the compile is done, I reopen the project info and see that mysteriously Encryption has been turned back on.
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>Anyone have any ideas why when I manually turn project encryption off it won't stay off?

Most likely you have an encrypted project referenced by your project. Look under Code -> Applications.