XcodeColors crashes in Xcode 6.0.1 when using Bots

My apologies for submitting a bug as a Pull Request, but the issue tracking for this project is not enabled.

We have been using CocoaLumberjack and everything is working nicely on Xcode 6.0.1. However, once we started using bots, Xcode is crashing as soon as we select one of the bots.

Here's the crash log...

```
Process:         Xcode [5304]
Path:            /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier:      com.apple.dt.Xcode
Version:         6.0.1 (6528)
Build Info:      IDEFrameworks-6528000000000000~2
App Item ID:     497799835
App External ID: 712682811
Code Type:       X86-64 (Native)
Parent Process:  launchd [349]
Responsible:     Xcode [5304]
User ID:         588502068

PlugIn Path:       /Users/USER/Library/Application Support/Developer/*/XcodeColors
PlugIn Identifier: ru.DeepIT.XcodeColors
PlugIn Version:    1.0.9 (109)

Date/Time:       2014-09-30 17:54:28.545 -0700
OS Version:      Mac OS X 10.9.4 (13E28)
Report Version:  11
Anonymous UUID:  A7A22441-A032-6F39-106F-B570CCFC9D52

Sleep/Wake UUID: 1D47A046-1880-4821-B048-75EF7B8E6370

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000010

VM Regions Near 0x10:
--> 
    __TEXT                 0000000100b53000-0000000100b54000 [    4K] r-x/rwx SM=COW  /Applications/Xcode.app/Contents/MacOS/Xcode

Application Specific Information:
ProductBuildVersion: 6A317

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libobjc.A.dylib                 0x00007fff89c8179f objc_retain + 15
1   ru.DeepIT.XcodeColors           0x000000010faf6a43 -[XcodeColors_NSTextStorage fixAttributesInRange:] + 35
2   com.apple.AppKit                0x00007fff81a6df49 __NSCreateRenderingContextForAttributedString + 181
3   com.apple.AppKit                0x00007fff81b34c7c _NSStringDrawingCore + 2273
4   com.apple.AppKit                0x00007fff81b33910 _NSDrawTextCell + 6400
5   com.apple.AppKit                0x00007fff81b3a5fc -[NSTextFieldCell drawInteriorWithFrame:inView:] + 963
6   com.apple.AppKit                0x00007fff81b39468 -[NSControl drawRect:] + 341
7   com.apple.AppKit                0x00007fff81b2c04f -[NSView _drawRect:clip:] + 3748
8   com.apple.AppKit                0x00007fff81b2a8c4 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1799
9   com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
10  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
11  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
12  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
13  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
14  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
15  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
16  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
17  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
18  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
19  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
20  com.apple.dt.DVTKit             0x0000000101181f1b -[DVTReplacementView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 207
21  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
22  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
23  com.apple.AppKit                0x00007fff81b2aca0 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2787
24  com.apple.AppKit                0x00007fff81b28706 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 841
25  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
26  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
27  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
28  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
29  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
30  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
31  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
32  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
33  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
34  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
35  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
36  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
37  com.apple.AppKit                0x00007fff81b29bc4 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 6151
38  com.apple.AppKit                0x00007fff81b27eb1 -[NSThemeFrame _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 314
39  com.apple.AppKit                0x00007fff81b24e9f -[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] + 2828
40  com.apple.AppKit                0x00007fff81b042da -[NSView displayIfNeeded] + 1680
41  com.apple.AppKit                0x00007fff81b6974e _handleWindowNeedsDisplayOrLayoutOrUpdateConstraints + 884
42  com.apple.AppKit                0x00007fff8213f061 __83-[NSWindow _postWindowNeedsDisplayOrLayoutOrUpdateConstraintsUnlessPostingDisabled]_block_invoke1331 + 46
43  com.apple.CoreFoundation        0x00007fff86726d67 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
44  com.apple.CoreFoundation        0x00007fff86726cd7 __CFRunLoopDoObservers + 391
45  com.apple.CoreFoundation        0x00007fff867183b8 __CFRunLoopRun + 776
46  com.apple.CoreFoundation        0x00007fff86717e75 CFRunLoopRunSpecific + 309
47  com.apple.HIToolbox             0x00007fff88861a0d RunCurrentEventLoopInMode + 226
48  com.apple.HIToolbox             0x00007fff88861685 ReceiveNextEventCommon + 173
49  com.apple.HIToolbox             0x00007fff888615bc _BlockUntilNextEventMatchingListInModeWithFilter + 65
50  com.apple.AppKit                0x00007fff819cd24e _DPSNextEvent + 1434
51  com.apple.AppKit                0x00007fff819cc89b -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
52  com.apple.dt.DVTKit             0x00000001012917bd -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 237
53  com.apple.AppKit                0x00007fff819c099c -[NSApplication run] + 553
54  com.apple.AppKit                0x00007fff819ab783 NSApplicationMain + 940
55  libdyld.dylib                   0x00007fff8d3395fd start + 1
```

Any help would be greatly appreciated. I'm not even sure where to start with this issue.