Adobe uses digital signatures. A legitimate ACR 6.7 file is signed by Adobe Systems Incorporated. A repack is not. Modern antivirus software (Windows Defender, Malwarebytes) will likely flag and quarantine the file immediately.
This includes, but is not limited to, the Canon EOS 5D Mark III, Nikon D800, Nikon D4, and Fujifilm X-Pro1.
Open Photoshop CS5, go to Help > About Plug-in > Camera Raw to verify you are on version 6.7. Alternatives: What if My Camera is Newer Than 6.7?
This utility converts newer proprietary raw files (e.g., .CR3, .ARW) into the universal DNG format, which can then be opened in Camera Raw 6.7 and CS5. Download: Get the latest DNG Converter directly from Adobe. Conclusion
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