iOS WatchKit - Error launching watch app "SPErrorInvalidBundleNoGizmoBinaryMessage"

Question

I am trying to build a watchKit app that will allow Two-Way communications between the iPhone App and Watch App. I have setup App Groups and all the proper App Certificates, Provisioning Profiles and Entitlements are set and match up. But I keep getting this error when I try to run the Watch App (no error when running just the iPhone App).

Error:

Error Launching 'MyWatchApp WatchKit Extension' SPErrorInvalidBundleNoGizmoBinaryMessage

I think it has something to do with the Bundle Identifiers, but as far as I can tell everything looks correct. Any suggestions?

Here are my bundle identifiers:

App Group Key: group.com.nitwitstudios.myWatchApp

iPhone App Bundle Identifier: com.nitwitstudios.myWatchApp

Watch App Bundle Identifier: com.nitwitstudios.myWatchApp.watchkit
Watch App WKCompanionAppBundleIdentifier: com.nitwitstudios.myWatchApp

Watch Extension App Bundle Identifier: com.nitwitstudios.myWatchApp.watchkit.extension
Watch Extension WKAppBundleIdentifier: com.nitwitstudios.myWatchApp.watchkit

Note - Changing Watch Extension App Bundle to "com.nitwitstudios.myWatchApp.watchkit" allows me to run the app, but then I never get proper results when trying to communicate Phone -> Watch. This is specified as a bundle identifier problem in Why won't app groups work inside my WatchKit extension?

I have already tried the following with no success:

Clean / Clean Build Folder
Deleted Derived Data
Restarted Xcode

possible duplicate of [Apple Watchkit simulator issue: SPErrorInvalidBundleNoGizmoBinaryMessage](http://stackoverflow.com/questions/28286571/apple-watchkit-simulator-issue-sperrorinvalidbundlenogizmobinarymessage) — Wouter, Apr 13 '15 at 13:14

score 3 · Accepted Answer · edited Aug 11 '15 at 01:51

3

Ok figured it out. I was pretty close. It seems that the WatchKit Extension Bundle Identifier cannot contain the WatchKit App Bundle Identifier.

So my problem was that

com.nitwitstudios.myWatchApp.watchkit.extension

was too similar to

com.nitwitstudios.myWatchApp.watchkit

Changed my extension identifier to the below and voilà, I can now send two-way messages using MMWormhole library:

com.nitwitstudios.myWatchApp.extension

edited Aug 11 '15 at 01:51

rpowell

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answered Apr 09 '15 at 21:23

JimmyJammed

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Thought this might seem irrelevant, it's " Voilà " and not "Wa-La". – Gil Sand Jul 24 '15 at 14:20

score 3 · Answer 2 · answered Jun 05 '15 at 20:15

3

I was using the simulator with iOS8.2; switching to iOS8.3 worked.

answered Jun 05 '15 at 20:15

eric f.

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iOS WatchKit - Error launching watch app "SPErrorInvalidBundleNoGizmoBinaryMessage"

2 Answers2