Error Launching WatchKit Extension

Things were working just fine, but now I can't launch any app in the simulator. The watch simulator just sits on the clock face and then throws the following error after a couple of minutes:


This happens on even the simplest "Hello World" type apps. I tried uninstalling and reinstalling Xcode, but the problem persists.

Accepted Answer

Hmm. Removed the app from both iPhone and Watch simulators seems to have fixed the problem... Thought I already tried that, but ¯\_(ツ)_/¯?

Error Launching WatchKit Extension
 
 
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