# Tutorial 1: Runtime warning of duplicate PLBuildVersion

**URL:** <https://forums.kodeco.com/t/tutorial-1-runtime-warning-of-duplicate-plbuildversion/26934>\
**Category:** iOS Apprentice\
**Created:** [March 6, 2017, 5:31pm UTC](https://forums.kodeco.com/t/tutorial-1-runtime-warning-of-duplicate-plbuildversion/26934 "2017-03-06T17:31:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kjhack](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/kjhack/32/61567_2.png) [@kjhack](https://forums.kodeco.com/u/kjhack)\
**Post date:** [March 6, 2017, 5:31pm UTC](https://forums.kodeco.com/t/tutorial-1-runtime-warning-of-duplicate-plbuildversion/26934/1 "2017-03-06T17:31:53Z")

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While walking thru V5 of Tutorial 1, I’m getting a runtime warning of:

> objc[82403]: Class PLBuildVersion is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices (0x11f18a998) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/PhotoLibraryServices.framework/PhotoLibraryServices (0x11efac880). One of the two will be used. Which one is undefined.

I noticed is showing up around page 121-122 of v5.0 documentation when i changed the About View Controller to contain a web view instead of just the label with the “about” text. I haven’t yet diagnosed if i change it back, the warning goes away, that’s on my list to try.

It appears to be a run time warning only, it’s not stopping the running of the app on the simulator. I am running Xcode 8.2.1 and running simulator v10.0 (although runtime warning appears with multiple iPhone versions in the simulator).

Mostly, i am just wondering if this is showing up for anyone else or unique to my installation/implementation.

Thanks.

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<div class="post-metadata">

**Author:** ![hollance](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/hollance/32/109009_2.png) [@hollance](https://forums.kodeco.com/u/hollance)\
**Post date:** [March 7, 2017, 10:10am UTC](https://forums.kodeco.com/t/tutorial-1-runtime-warning-of-duplicate-plbuildversion/26934/2 "2017-03-07T10:10:05Z")

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I wouldn’t worry about this. It’s probably just something weird in the Simulator. It does that sometimes.