Launching old Reality Composer on macOS Tahoe

Question

Level 1

26 points

Launching old Reality Composer on macOS Tahoe

What should I change in Info.plist file to launch (not Pro) Reality Composer 1.5 on macOS 26 Tahoe? In 2017, I did the following trick with Apple Shake 4.1.1 when it wouldn't launch from Apps folder on macOS High Sierra.

Info.plist content:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">

<dict>

<key>BuildMachineOSBuild</key>

<key>CFBundleDevelopmentRegion</key>

<key>CFBundleDisplayName</key>

<string>RealityComposer</string>

<key>CFBundleDocumentTypes</key>

<array>

<dict>

<key>CFBundleTypeExtensions</key>

<array>

<string>rcproject</string>

</array>

<key>CFBundleTypeIconFile</key>

<string>ProjectIcon</string>

<key>CFBundleTypeName</key>

<string>RCProject</string>

<key>CFBundleTypeRole</key>

<string>Editor</string>

<key>LSItemContentTypes</key>

<array>

<string>com.apple.rcproject</string>

</array>

<key>LSTypeIsPackage</key>

<key>NSDocumentClass</key>

<string>RCShared.Document</string>

<key>NSUbiquitousDocumentUserActivityType</key>

<string>com.apple.RealityComposer.opendocument</string>

</dict>

</array>

<key>CFBundleExecutable</key>

<string>RealityComposer</string>

<key>CFBundleIconFile</key>

<string>AppIcon</string>

<key>CFBundleIconName</key>

<string>AppIcon</string>

<key>CFBundleIdentifier</key>

<string>com.apple.RealityComposer</string>

<key>CFBundleInfoDictionaryVersion</key>

<key>CFBundleName</key>

<string>Reality Composer</string>

<key>CFBundlePackageType</key>

<key>CFBundleShortVersionString</key>

<key>CFBundleSupportedPlatforms</key>

<array>

<string>MacOSX</string>

</array>

<key>CFBundleVersion</key>

<key>DTCompiler</key>

<string>com.apple.compilers.llvm.clang.1_0</string>

<key>DTPlatformBuild</key>

<key>DTPlatformName</key>

<string>macosx</string>

<key>DTPlatformVersion</key>

<key>DTSDKBuild</key>

<key>DTSDKName</key>

<string>macosx13.3.internal</string>

<key>DTXcode</key>

<key>DTXcodeBuild</key>

<key>LSHasLocalizedDisplayName</key>

<true/>

<key>LSMinimumSystemVersion</key>

<key>NSHumanReadableCopyright</key>

<key>NSMainStoryboardFile</key>

<key>NSPrincipalClass</key>

<string>NSApplication</string>

<key>NSUserActivityTypes</key>

<array>

<string>com.apple.RealityComposer.live-editing</string>

</array>

<key>UTExportedTypeDeclarations</key>

<array>

<dict>

<key>UTTypeConformsTo</key>

<array>

<string>com.apple.package</string>

<string>public.composite-content</string>

<string>public.directory</string>

<string>public.item</string>

</array>

<key>UTTypeDescription</key>

<string>Reality Composer Project</string>

<key>UTTypeIconFile</key>

<string>ProjectIcon</string>

<key>UTTypeIdentifier</key>

<string>com.apple.rcproject</string>

<key>UTTypeTagSpecification</key>

<dict>

<key>public.filename-extension</key>

<array>

<string>rcproject</string>

</array>

<key>public.mime-type</key>

<array>

<string>application/octet-stream</string>

</array>

</dict>

<dict>

<key>UTTypeConformsTo</key>

<array>

<string>public.data</string>

<string>public.item</string>

</array>

<key>UTTypeDescription</key>

<string>Reality File</string>

<key>UTTypeIconFile</key>

<string>RealityIcon</string>

<key>UTTypeIdentifier</key>

<string>com.apple.reality</string>

<key>UTTypeTagSpecification</key>

<dict>

<key>public.filename-extension</key>

<array>

<string>reality</string>

</array>

<key>public.mime-type</key>

<array>

<string>application/octet-stream</string>

</array>

</dict>

</array>

</dict>

</plist>

Posted on Oct 20, 2025 2:41 AM

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Answer 1

VikingOSX

Level 10

123,272 points

Oct 20, 2025 3:14 AM in response to compositing

Reality Composer 1.5 (bundled with Xcode 14) has long since been replaced by Reality Composer Pro in newer Xcode releases.

Tahoe expects Xcode 26.0.1 (macOS ≥ 15.6), and it is quite doubtful that a simple plist hack will allow you to achieve your goal. Reality Composer Pro is the more powerful and likely what you should, and will be required to use with Tahoe.

Reply

Answer 2

compositing Author

Level 1

26 points

Oct 20, 2025 4:17 AM in response to VikingOSX

Hey VikingOSX,

Despite Apple's strong desire to replace RC with RCP, the former worked perfectly, not only as part of Xcode, but also as a standalone app until the release of Tahoe. This means Reality Composer 1.5 launch limitation in Tahoe is "artificial", not natural. Other Apple's 2021-apps work in Tahoe without any issue. For instance Reality Converter.

P.S. People said the same thing about Shake in 2017 (it's impossible to launch it in High Sierra), but Shake gave in. I'm sure the same can be done with RC.

Reply

Answer 3

VikingOSX

Level 10

123,272 points

Oct 20, 2025 5:02 AM in response to compositing

Apple Support Communities are unlikely to be the proper place for receiving tweaking recommendations for four-year-old applications that have been superceded by newer products that one is expected to use on macOS Tahoe.

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