Symbolic breakpoints in XCode suddenly not working

Update: if you've added symbolic breakpoints and they're not working, uh, "wait awhile". After posting t开发者_开发知识库his and moving on and doing something else in the project, I then had an objc_exception_throw caught at some point.

I've been adding -[NSException raise] and objc_exception_throw as symbolic breakpoints to all my projects and it's worked great, but as I was recreating a project that had gone bonkers, symbolic breakpoints stopped working.

Worth mentioning: objc_exception_throw, when added, did not auto-fill the Location. Whenever I've added it in the past, it's always put "libobjc.A.dylib" in by itself.

Running the old project with

NSArray *a = [NSArray arrayWithObjects:@"hi", nil];
NSLog(@"here is a[2]: %@", [a objectAtIndex:2]);

in the "didFinishLaunching" method, I immediately get a break at the NSLog (as I should). Running the new project with the above, I get a signal "SIGABRT" and no breakpoint. The same code, even the same project, but different XCode files.

[Solved: see top of this question]

This resolved itself. My XCode may be corrupt or something, but if you experience the above, if possible just move on and go back to the exception throwing problem later on.