[Bug] Errors with tweaks

[Applone]

Report

I am trying to inject a dylib tweak into an app using Feather. I've tried injecting Frida Gadget and my own custom tweak.

With Frida, I encountered the following error:
kernel AMFI: constraint violation /private/var/containers/Bundle/Application/.../incy.app/Frameworks/CydiaSubstrate.framework/CydiaSubstrate has entitlements but is not a main binary
After this, the app crashed immediately.

With my custom tweak, the error is similar:
kernel AMFI: constraint violation /private/var/containers/Bundle/Application.../incy.app/Frameworks/Tweak1.dylib has entitlements but is not a main binary
In this case, there was no crash, but the tweak still didn't load.

I updated Feather from version 2.6.0 to 2.7.0 and tried the new "Inject into Extensions" feature, but it didn't change anything.

Request Agreement

• I have read the requirements for opening an issue above

Contributor Checks

• I am willing to attempt to make a pull request to fix this bug

[lockieluke]

i think this started happening after iOS 26.4

[Applone]

i think this started happening after iOS 26.4

actually, I ran into this same problem back on iOS 16-18 with ESign. there was just nowhere to open an issue then because the project was no longer supported.