Hi, I’m having a problem with ARDK that crashes app with “Failed to load plugin. Plugin loading is only allowed on main thread.” as soon as app launched. One thing I noticed that ARDK attaches main app’s lifecycle on load so it gets applicationDidFinishLaunching event even before UnityFramework s…

Hi there, I’m sorry to hear you’re having trouble getting the ARDK to work on your mobile device. The steps you performed after “Build & Run” aren’t necessary and you don’t have to do any manipulation of plugins or directories to deploy to a device. I would recommend cleaning your build directory a…

Hi Maverick, No, it’s not that simple problem. Please read post. ADRK crashes app in Unity as a library situation. Any fix? Thanks, – JK

I think it’s same issue as this one: [image] Crash when embed Unity with ARDK inside IOS Native App I'm Stuck Include the following details (edit as applicable): Issue category: Semantic Segmentation / Multiplayer / Real-time Mapping-Depth / ARDK Documenta…

I think it’s same issue as this one: [image] Crash when embed Unity with ARDK inside IOS Native App I’m Stuck Include the following details (edit as applicable): Issue category: Semantic Segmentation / Multiplayer / Real-time Mapping-Depth / ARDK Documentation / Unity Example Package / Sample Ap…

Hi JK, Could you please clarify what you’re trying to do? Why are you changing the NativeCallProxy.h and completing those extra steps in Xcode? Kind regards, Maverick L.

Hi Maverick, I’m not changing NativeCallProxy.h. Just building with UaaL sample iOS app. Please refer to steps I wrote above. App crashes in ADRK library because of wrong lifecycle event handling under UaaL mode. Thanks, – JK

Hi JK, I apologize for the confusion. Since the ARDK is requesting the lifecycle on load prior to the framework’s initialization and startup, one potential solution would be to eagerly load the UnityFramework at application start. Eager loading should be completed within the AppDelegate.swift in t…

Hi Maverick, Thank you for your reply. ARDK is requesting the lifecycle on load prior to the framework’s initialization Yes, that’s the problem. We want to run Unity on demand, so loading UnityFramework on parent app launch is not an option. Lazy loading frameworks is possible, but ARDK will …

Hi JK, Something you can try is disabling “Initialize XR on Startup” in XR Plug-in Management and manually initializing XR from a script as shown here, but even then lazy loading may not work because of the presence of static constructors and other Unity dependencies. I apologize for the inconveni…

ARDK3: Crashes App with "Failed to load plugin. Plugin loading is only allowed on main thread."

Bug Reports

JK1 August 13, 2025, 2:06am 4

I think it’s same issue as this one:

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ARDK3: Crashes App with "Failed to load plugin. Plugin loading is only allowed on main thread."

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