# Update 5.2.1 + .vst crashes **URL:** \ **Category:** General JUCE discussion\ **Created:** [February 9, 2018, 8:09pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335 "2018-02-09T20:09:45Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![MIA-LABORATORIES](https://avatars.discourse-cdn.com/v4/letter/m/dc4da7/32.png) [@MIA-LABORATORIES](https://forum.juce.com/u/MIA-LABORATORIES)\ **Post date:** [February 9, 2018, 8:09pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/1 "2018-02-09T20:09:45Z")
Hello, after the latest update 5.2.1 my plugin .VST crashes in reaper, cubase and Ableton live. I have not changed anything except the JUCE version… I did not have this problem with 5.2 and i just opened the project on new juce without any changes, then I build it in Xcode, everything fine, the .AU is opening fine everywhere, and the VST3, just the .VST crashes everything and the DAW is shutting down … any ideas? ![23](https://us1.discourse-cdn.com/flex026/uploads/juce/original/2X/6/6d50475149a735d4f26e67cab7848c988f266b9c.png) ![05](https://us1.discourse-cdn.com/flex026/uploads/juce/original/2X/8/818670d955530025c6cedd48f12df327f10552a5.png) ---
**Author:** ![danielrudrich](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/danielrudrich/32/3735_2.png) [@danielrudrich](https://forum.juce.com/u/danielrudrich)\ **Post date:** [February 10, 2018, 12:18pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/2 "2018-02-10T12:18:54Z")
Try running your plug-in in debug mode and find out why it is crashing (at what point in your code). Only then we can help you 🙂 On Xcode: Product -\> Scheme -\> Edit Scheme (or just CMD+\<), Executable: your DAW, or the JUCE plug-in host, or the standalone, wherever you experience that behavior. ---
**Author:** ![MIA-LABORATORIES](https://avatars.discourse-cdn.com/v4/letter/m/dc4da7/32.png) [@MIA-LABORATORIES](https://forum.juce.com/u/MIA-LABORATORIES)\ **Post date:** [February 10, 2018, 1:46pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/3 "2018-02-10T13:46:27Z")
can you get anything out of this ? : Process: REAPER [2152] Path: /Applications/REAPER64.app/Contents/MacOS/REAPER Identifier: com.cockos.reaper Version: 5.70.0 (5.70.0) Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: REAPER [2152] User ID: 501 Date/Time: 2018-02-10 15:43:33.524 +0200 OS Version: Mac OS X 10.13.2 (17C88) Report Version: 12 Anonymous UUID: 23F0F7CE-AACA-6D95-DEF0-3839B2720E00 Sleep/Wake UUID: 50285768-A239-4E3F-9AA6-244C7D4FCAA2 Time Awake Since Boot: 12000 seconds Time Since Wake: 630 seconds System Integrity Protection: enabled Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC\_BAD\_ACCESS (SIGSEGV) Exception Codes: KERN\_INVALID\_ADDRESS at 0x0000000000000030 Exception Note: EXC\_CORPSE\_NOTIFY Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [0] ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [February 10, 2018, 3:06pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/4 "2018-02-10T15:06:59Z")
There’s only one universal piece of advice that anyone can give you when your code crashes: GO AND DEBUG IT!! Nobody else can do that for you. It’s why we have debuggers! ---
**Author:** ![WilliamkWusik](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/williamkwusik/32/3821_2.png) [@WilliamkWusik](https://forum.juce.com/u/WilliamkWusik)\ **Post date:** [January 15, 2019, 8:19pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/6 "2019-01-15T20:19:48Z")
Here’s my own crash log, very strange, as it crashes in a weird place. Here’s a crash log : Process: Live [15526] Path: /Applications/Ableton Live 10 Suite.app/Contents/MacOS/Live Identifier: com.ableton.live Version: 10.0.5 [2018-10-18\_8aeadb1597] (10.0.5 [2018-10-18\_8aeadb1597]) Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Live [15526] User ID: 501 Date/Time: 2019-01-15 11:55:49.900 -0800 OS Version: Mac OS X 10.13.6 (17G4015) Report Version: 12 Anonymous UUID: FD1E3357-99C9-EC06-74CC-CCACC9A3951C Sleep/Wake UUID: 102868BD-9F03-474A-97DC-D95AD587B80D Time Awake Since Boot: 50000 seconds Time Since Wake: 3800 seconds System Integrity Protection: enabled Crashed Thread: 4 AudioCalc Exception Type: EXC\_BAD\_ACCESS (SIGSEGV) Exception Codes: KERN\_INVALID\_ADDRESS at 0x0000000000000000 Exception Note: EXC\_CORPSE\_NOTIFY Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [0] VM Regions Near 0: –\> ``` __TEXT 0000000100000000-000000010367f000 [54.5M] r-x/rwx SM=COW /Applications/Ableton Live 10 Suite.app/Contents/MacOS/Live ``` Thread 0:: MainThread Dispatch queue: com.apple.main-thread 0 libsystem\_kernel.dylib 0x00007fff5761820a mach\_msg\_trap + 10 1 libsystem\_kernel.dylib 0x00007fff57617724 mach\_msg + 60 2 com.apple.CoreFoundation 0x00007fff2f5a4665 \_\_CFRunLoopServiceMachPort + 341 3 com.apple.CoreFoundation 0x00007fff2f5a39b7 \_\_CFRunLoopRun + 1783 4 com.apple.CoreFoundation 0x00007fff2f5a3033 CFRunLoopRunSpecific + 483 5 com.apple.HIToolbox 0x00007fff2e88dd96 RunCurrentEventLoopInMode + 286 6 com.apple.HIToolbox 0x00007fff2e88db06 ReceiveNextEventCommon + 613 7 com.apple.HIToolbox 0x00007fff2e88d884 \_BlockUntilNextEventMatchingListInModeWithFilter + 64 8 com.apple.AppKit 0x00007fff2cb3da73 \_DPSNextEvent + 2085 9 com.apple.AppKit 0x00007fff2d2d3e34 -[NSApplication(NSEvent) \_nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044 10 com.apple.AppKit 0x00007fff2cb32885 -[NSApplication run] + 764 11 com.ableton.live 0x0000000100b60b19 0x100000000 + 11930393 12 libdyld.dylib 0x00007fff574d1015 start + 1 Thread 1: 0 libsystem\_kernel.dylib 0x00007fff5762228a \_\_workq\_kernreturn + 10 1 libsystem\_pthread.dylib 0x00007fff577e920e \_pthread\_wqthread + 1552 2 libsystem\_pthread.dylib 0x00007fff577e8be9 start\_wqthread + 13 Thread 2:: NetIoThread 0 libsystem\_kernel.dylib 0x00007fff57618246 semaphore\_wait\_trap + 10 1 com.ableton.live 0x000000010081ad98 0x100000000 + 8498584 2 com.ableton.live 0x0000000100ab339b 0x100000000 + 11219867 3 com.ableton.live 0x000000010082b861 void\* std::\_\_1::\_\_thread\_proxy\ \>(void\*) + 113 4 libsystem\_pthread.dylib 0x00007fff577e9661 \_pthread\_body + 340 5 libsystem\_pthread.dylib 0x00007fff577e950d \_pthread\_start + 377 6 libsystem\_pthread.dylib 0x00007fff577e8bf9 thread\_start + 13 Thread 3:: AudioCalc 0 libsystem\_kernel.dylib 0x00007fff57618246 semaphore\_wait\_trap + 10 1 com.ableton.live 0x000000010081ad98 0x100000000 + 8498584 2 com.ableton.live 0x0000000100d6ed8a 0x100000000 + 14085514 3 com.ableton.live 0x000000010082b861 void\* std::\_\_1::\_\_thread\_proxy\ \>(void\*) + 113 4 libsystem\_pthread.dylib 0x00007fff577e9661 \_pthread\_body + 340 5 libsystem\_pthread.dylib 0x00007fff577e950d \_pthread\_start + 377 6 libsystem\_pthread.dylib 0x00007fff577e8bf9 thread\_start + 13 Thread 4 Crashed:: AudioCalc 0 com.wusik.WusikEVEv5 0x00000001739300e4 void juce::VSTPluginInstance::processAudio\(juce::AudioBuffer\&, juce::MidiBuffer&, juce::AudioBuffer\&, juce::HeapBlock\&, bool) + 1940 1 com.wusik.WusikEVEv5 0x0000000173889692 Wusik4000AudioProcessor::processBlock(juce::AudioBuffer\&, juce::MidiBuffer&) + 33186 2 com.wusik.WusikEVEv5 0x00000001736c2cfc JuceVSTWrapper::processReplacingCB(Vst2::AEffect\*, float\*\*, float\*\*, int) + 1308 3 com.ableton.live 0x0000000101cbbcb0 0x100000000 + 30129328 4 com.ableton.live 0x0000000101cbba6c 0x100000000 + 30128748 5 com.ableton.live 0x0000000101cae0c0 0x100000000 + 30073024 6 com.ableton.live 0x0000000100d6b8d3 0x100000000 + 14072019 7 com.ableton.live 0x0000000100d8a35d 0x100000000 + 14197597 8 com.ableton.live 0x0000000100d6ef9c 0x100000000 + 14086044 9 com.ableton.live 0x0000000100d6edbe 0x100000000 + 14085566 10 com.ableton.live 0x000000010082b861 void\* std::\_\_1::\_\_thread\_proxy\ \>(void\*) + 113 11 libsystem\_pthread.dylib 0x00007fff577e9661 \_pthread\_body + 340 12 libsystem\_pthread.dylib 0x00007fff577e950d \_pthread\_start + 377 13 libsystem\_pthread.dylib 0x00007fff577e8bf9 thread\_start + 13 Thread 5:: AudioCalc 0 libsystem\_kernel.dylib 0x00007fff57618246 semaphore\_wait\_trap + 10 ---
**Author:** ![danielrudrich](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/danielrudrich/32/3735_2.png) [@danielrudrich](https://forum.juce.com/u/danielrudrich)\ **Post date:** [January 15, 2019, 10:02pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/8 "2019-01-15T22:02:14Z")
You really should use a debugger, a crash log won’t give you all the information about the current state of the processor (member variables, iterators,…). Attach a debugger and you will see where the problem is. We are not ‚just‘ saying to use a debugger, it’s the only way to find out more. ---
**Author:** ![Toddler-Boy](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/toddler-boy/32/2007_2.png) [@Toddler-Boy](https://forum.juce.com/u/Toddler-Boy)\ **Post date:** [January 15, 2019, 11:58pm UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/9 "2019-01-15T23:58:14Z")
It’s very easy to see that it crashes within your own code because you’re reading or writing into address 0, probably via a nullptr. ---
**Author:** ![daniel](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/daniel/32/790_2.png) [@daniel](https://forum.juce.com/u/daniel)\ **Post date:** [January 16, 2019, 12:24am UTC](https://forum.juce.com/t/update-5-2-1-vst-crashes/26335/10 "2019-01-16T00:24:08Z")
I think, that is not the case, the crashed function in Thread 4 on top of the stack is indeed a juce function: > That doesn’t change the fact, that it can only be solved by somebody with the source code. Since this function normally does it’s job, there must be another reason, could be memory corruption or anything else… But even if it is an error on JUCE’s end, it can’t be fixed without a piece of code, that reproduces the issue. I am wondering, are you wrapping a plugin by any chance, and the audio buffers are invalid? Just a wild guess… Good luck debugging!