Question: In one project I'm using I can't set breakpoints in Swift code, Xcode always crashes when reaching one of them, doesn't matter if it's a "manual" or an exception breakpoint.

In other projects everything works as expected, only for one project Xcode 6.4 (6E35b) always crashes.

I tried cleaning, deleting derived data, resetting simulator, restarting Xcode/Mac - nothing helped at all.

Anyone else experiencing this problem and hopefully knows what helps?

**EDIT**
Seems only to be the case on one machine (Xcode 6.4, 10.10.5), but not on the other (Xcode 6.4, El Capitan). But as I mentioned in the comments, reinstalling Xcode didn't help, are there some other preferences I could reset/delete?

**EDIT2**
Here's the Xcode crash log file:
<https://dl.dropboxusercontent.com/u/119600/Xcode_2015-08-12-074655_Stefans-iMac.crash>

Answer: 
It's a longshot, but let me know if it's working:

uncheck the "Always show Dissasembly" check

```
Debug > Debug Workflow > Always Show Disassembly

```

In older versions of Xcode (<6.1):

```
Product > Debug Workflow > Show Disassembly When Debugging

```
I've just spent the past few hours trying to solve exactly the same issue.

I thought at first, it had started due to installing Xcode 7 on the same machine as Xcode 6.4. The problem certainly coincided.

However, due to having version control, I could look and see what files had changed since opening the project with Xcode 7.

The images.xcassets file had changed. Reverting this file back has stopped Xcode from crashing each time it hit a breakpoint. 

I'm not sure whether this helps at all, but definitely look at images.xcassets and if needs be, delete it, recreate it and ensure it's setup 100%. It certainly fixed my issue.