SM5 beta 4a - Mac OS X Yosemite crash

Opening my Stepmania application gives me several errors then crashes without loading the songs at all.

StepMania v5.0 beta 3 crash report (build 83, Mon Aug 11 15:25:30 EDT 2014 @ )
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Architecture: Mac OS X (i386)
Crash reason: Segmentation fault - address not mapped at 0x00000004
Crashed thread: Main thread

Checkpoints:
Thread: GUI thread
Thread: Main thread
RageSurface_Load_PNG.cpp:20
RageSurface_Load_PNG.cpp:245
RageSurface_Load_PNG.cpp:20
RageSurface_Load_PNG.cpp:20
RageSurface_Load_PNG.cpp:20
Thread: Decode thread

Thread: Main thread
9af49ff6: CFRunLoopAddObserver (CoreFoundation)
004896be: RageSoundDriver_AU::Init()
0049b3a1: RageSoundDriver::Create(StdString::CStdStr<char> const&)
0001907f: RageSoundManager::Init()
000d5b6b: SM_main
0047624b: -[SMMain startGame:]

Static log:
StepMania v5.0 beta 3
Compiled Mon Aug 11 15:25:30 EDT 2014 @ (build 83)
Log starting 2014-10-30 19:51:50
Loading window: macosx
Model: MacBookAir6,1 (4/4)
Clock speed 1.30 GHz
Mac OS X 10.10
Memory: 4.00 GB
WARNING: String "ScreenDebugOverlay::Reload Overlay Screens" is missing.
WARNING: String "ScreenDebugOverlay::Toggle Errors" is missing.
WARNING: String "ScreenDebugOverlay::Clear Errors" is missing.
WARNING: Metric "ScoreKeeperNormal::PercentScoreWeightMissedHold" is missing.
WARNING: Metric "ScoreKeeperNormal::GradeWeightMissedHold" is missing.
WARNING: String "ScreenDebugOverlay::Reload Overlay Screens" is missing.
WARNING: String "ScreenDebugOverlay::Toggle Errors" is missing.
WARNING: String "ScreenDebugOverlay::Clear Errors" is missing.
Language: en
Theme: default

Partial log:
00:03.714: WARNING: String "ScreenDebugOverlay::Reload Overlay Screens" is missing.
00:03.714: Dialog: "String "ScreenDebugOverlay::Reload Overlay Screens" is missing. Correct this and click Retry, or Cancel to break." []
00:04.197: String "ScreenDebugOverlay::Reload Overlay Screens" could not be found in "Themes/default/metrics.ini" or "Themes/_fallback/metrics.ini".
00:04.199: WARNING: String "ScreenDebugOverlay::Toggle Errors" is missing.
00:04.199: Dialog: "String "ScreenDebugOverlay::Toggle Errors" is missing. Correct this and click Retry, or Cancel to break." []
00:04.697: String "ScreenDebugOverlay::Toggle Errors" could not be found in "Themes/default/metrics.ini" or "Themes/_fallback/metrics.ini".
00:04.697: WARNING: String "ScreenDebugOverlay::Clear Errors" is missing.
00:04.697: Dialog: "String "ScreenDebugOverlay::Clear Errors" is missing. Correct this and click Retry, or Cancel to break." []
00:05.180: String "ScreenDebugOverlay::Clear Errors" could not be found in "Themes/default/metrics.ini" or "Themes/_fallback/metrics.ini".
00:05.249: Starting thread: Decode thread

-- End of report

(I asked him to make this post in the ziv chat so I'd have more info to figure out his problem)
Problem resolved, accidentally using a beta 3 nightly still.