I’ve encountered this problem before but couldn’t remember how I solved it. Usually it happens with an SDK update or something similar. Disclaimer: this is for Mac users.
What happens is that when you tried to run an app in the iOS simulator, you will no longer see any of the options. It may just list Android and/or iTunes Sync but no simulators are listed. What worked for me was to:
- locate the hidden ./titanium directory in my home folder on my Mac
- Delete it.
- Then in Titanium, go to the terminal and type in: titanium sdk select
- Select the current/latest build of the Titanium SDK
- Restart Titanium
- The simulator options should be there