removing the last ruby crashes v1.4.1454

[terrencetalbot]

In Manage Rubies, if you have only ruby left in the sidebar and click the Remove button (as in, remove everything), 1.4 consistently crashes with the same issue:

Process:         JewelryBox [23668]
Path:            /Users/USER/Downloads/JewelryBox.app/Contents/MacOS/JewelryBox
Identifier:      com.unfiniti.JewelryBox
Version:         1.4 (1.4)
Code Type:       X86-64 (Native)
Parent Process:  launchd [167]
User ID:         501

Date/Time:       2012-12-29 15:54:39.985 -0800
OS Version:      Mac OS X 10.8.2 (12C60)
Report Version:  10

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                 0000000107a1f000-0000000107a8a000 [  428K] r-x/rwx SM=COW  /Users/USER/Downloads/JewelryBox.app/Contents/MacOS/JewelryBox

Application Specific Information:
objc_msgSend() selector name: reloadRubyTableView:


Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libobjc.A.dylib                 0x00007fff87d3d250 objc_msgSend + 16
1   com.apple.CoreFoundation        0x00007fff823cf47a _CFXNotificationPost + 2554
2   com.apple.Foundation            0x00007fff8a89a846 -[NSNotificationCenter postNotificationName:object:userInfo:] + 64
3   com.unfiniti.JewelryBox         0x0000000107a48174 0x107a1f000 + 168308
4   libdispatch.dylib               0x00007fff88fb6f01 _dispatch_call_block_and_release + 15
5   libdispatch.dylib               0x00007fff88fb30b6 _dispatch_client_callout + 8
6   libdispatch.dylib               0x00007fff88fb80c8 _dispatch_main_queue_callback_4CF + 275
7   com.apple.CoreFoundation        0x00007fff823bf0fe __CFRunLoopRun + 1614
8   com.apple.CoreFoundation        0x00007fff823be6b2 CFRunLoopRunSpecific + 290
9   com.apple.HIToolbox             0x00007fff81b680a4 RunCurrentEventLoopInMode + 209
10  com.apple.HIToolbox             0x00007fff81b67e42 ReceiveNextEventCommon + 356
11  com.apple.HIToolbox             0x00007fff81b67cd3 BlockUntilNextEventMatchingListInMode + 62
12  com.apple.AppKit                0x00007fff8d52a613 _DPSNextEvent + 685
13  com.apple.AppKit                0x00007fff8d529ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
14  com.apple.AppKit                0x00007fff8d521283 -[NSApplication run] + 517
15  com.apple.AppKit                0x00007fff8d4c5cb6 NSApplicationMain + 869
16  com.unfiniti.JewelryBox         0x0000000107a20a54 0x107a1f000 + 6740