Crash in -[ConsoleView setFileHandleToRead:]_block_invoke_2

[joerick]

Crash when the Run button was pressed. Only happened once so far.

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[NSBigMutableString replaceCharactersInRange:withString:]: nil argument'
terminating with uncaught exception of type NSException
abort() called

Backtrace:

0   CoreFoundation                      0x00007fff90647bd2 __exceptionPreprocess + 178
1   libobjc.A.dylib                     0x00007fff97e444fa objc_exception_throw + 48
2   CoreFoundation                      0x00007fff906ae3fd +[NSException raise:format:] + 205
3   Foundation                          0x00007fff99ff85d7 -[NSBigMutableString replaceCharactersInRange:withString:] + 137
4   Foundation                          0x00007fff99fdb49d -[NSConcreteMutableAttributedString replaceCharactersInRange:withAttributedString:] + 286
5   UIFoundation                        0x00007fff8e9ec4ee __71-[NSConcreteTextStorage replaceCharactersInRange:withAttributedString:]_block_invoke + 52
6   UIFoundation                        0x00007fff8e9ec431 -[NSConcreteTextStorage replaceCharactersInRange:withAttributedString:] + 138
7   Tide                                0x000000010ff1068b __35-[ConsoleView setFileHandleToRead:]_block_invoke_2 + 203
8   libdispatch.dylib                   0x00007fff959ee8ff _dispatch_call_block_and_release + 12
9   libdispatch.dylib                   0x00007fff959e3453 _dispatch_client_callout + 8
10  libdispatch.dylib                   0x00007fff959f6c1c _dispatch_main_queue_callback_4CF + 1685
11  CoreFoundation                      0x00007fff905fd789 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
...