Developer Error 35: Application Group Not Available

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Hi team,

I've been trying to resolve an error I came across when trying to install the new v3.3.0 IPAs. I am on a PC, installing via iLoader (v2.2..6) and Sidestore (v0.6.3). I had an old version of Apollo (unsure which version) running on my iPhone and then tried to install one of the new no extension IPAs and received the following error.

\```

● Failed to add developer app group

├ C:\Users\runneradmin\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\isideload-0.2.22\src\dev\app_groups.rs:67

│

● Developer error 35: An Application Group with Identifier 'group.com.christianselig.Apollo.YAV68322C6' is not available. Please enter a different string.

╰ C:\Users\runneradmin\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\isideload-0.2.22\src\dev\developer_session.rs:169

\```

So then I thought this is likely because I have an existing version of Apollo already signed, so I deleted it (which is why I don't know the version) and tried installing again. Same error. I figured then that since it was recently signed, I probably need to wait for it to expire. So, I waited 7 days, no Apollo app installed and tried installing again and received the same error. I checked my App IDs list in iLoader and it is showing group.com.christianselig.Apollo as being signed again even though I didn't have the app installed.

Any advice anyone can give me to get the install going? Workarounds?

Thanks!

Posted Jul 4, 2026, 9:18 PM UTC

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