Carbon Electra 2 crashing my Reaper

Carbon Electra 2, which I purchased and installed yesterday (20260529) keeps crashing Reaper v7.73. All I’m doing is inputting MIDI notes from an external MIDI keyboard or a VST sequencer on an adjacent track in Reaper and changing presets in the browser of Carbon Electra 2.

Hi @robst247 Have you reinstalled and restarted your machine? We have zero crash logs or items on our end. Also we have several Reaper users including on our Beta Team so this may be specific to your setup.

Hi Davide,
I will try reinstalling Carbon Electra 2 and then restarting Windows (I assume that’s what you mean by “reset your machine”).

Sorry yes restart. Let us know how you go.

Unfortunately, since I did a clean reinstall of Carbon Electra 2 and restarted Windows, the VST3 has crashed Reaper three more times.
Is there a crash log somewhere that I can send you?

Yes, if Reaper is crashing repeatedly there should hopefully be something useful we can look at.

Could you please send us:

  • Your Windows version
  • Reaper version
  • Whether it crashes on opening CE2, loading a preset, playing MIDI, closing the project, or randomly
  • Any steps that reproduce it consistently

For crash info, please check:

  1. Windows Reliability Monitor
    Search Windows for Reliability Monitor or View reliability history , then look for the Reaper crash. If you can screenshot or copy the details, that would help.
  2. Windows Event Viewer
    Open Event Viewer > Windows Logs > Application , then look for an Error around the time Reaper crashed. It may mention reaper.exe or Carbon Electra 2.vst3 .
  3. Crash dumps
    Please check if there are any files here:
    C:\Users\[YOUR USERNAME]\AppData\Local\CrashDumps

Also worth testing quickly:

  • Open a fresh/vanilla empty Reaper project
  • Add only Carbon Electra 2
  • Try the INIT preset first
  • Then try a few factory presets
  • If possible, try temporarily moving other plugins out of the project to rule out interaction with another plugin
  • Please check you have a Carbon Electra folder in your C Drive
  • If you have any other DAW or hosting environment please check CE2 works there

We haven’t seen widespread Reaper crash reports so far, but we definitely want to understand what’s happening on your system.

If you have a crash log after all of this please .zip it and DM to me and I will pass on to the team,

Hi Davide,

Windows 11 64-bit version: 25H2, OS Build 26200.8524 (latest)
Reaper Pro 64-bit version: 7.73 rev 0826fe (latest)

Crashes seem to happen randomly while using Carbon Electra 2.
I will test it in Bitwig, Cubase and PlugInGuru Unify 2 and report to you later.

I have found two Reaper crash dumps: Reaper CrashDumps.zip (6.5 MB)

Windows Event Viewer > Windows Logs > Application (yesterday, 20260529):

Faulting application name: reaper.exe, version: 7.7.3.0, time stamp: 0x6a076e19
Faulting module name: Carbon Electra 2.vst3, version: 2.0.0.0, time stamp: 0x6a16df21
Exception code: 0xc0000409
Fault offset: 0x00000000003599c5
Faulting process id: 0x4670
Faulting application start time: 0x1DCEFC1BC60AD8F
Faulting application path: C:\Program Files\REAPER (x64)\reaper.exe
Faulting module path: C:\Program Files\Common Files\VST3\Scaler Music\Carbon Electra 2.vst3\Contents\x86_64-win\Carbon Electra 2.vst3
Report Id: f8dd5de9-558e-4562-bd81-fc5f527c2a13
Faulting package full name:
Faulting package-relative application ID:

Faulting application name: reaper.exe, version: 7.7.3.0, time stamp: 0x6a076e19
Faulting module name: Carbon Electra 2.vst3, version: 2.0.0.0, time stamp: 0x6a16df21
Exception code: 0xc0000005
Fault offset: 0x0000000000238788
Faulting process id: 0x1680
Faulting application start time: 0x1DCEFC5ADB60CA5
Faulting application path: C:\Program Files\REAPER (x64)\reaper.exe
Faulting module path: C:\Program Files\Common Files\VST3\Scaler Music\Carbon Electra 2.vst3\Contents\x86_64-win\Carbon Electra 2.vst3
Report Id: a5198b42-0b23-4a43-896b-4ba3079a8c2c
Faulting package full name:
Faulting package-relative application ID:

Faulting application name: reaper.exe, version: 7.7.3.0, time stamp: 0x6a076e19
Faulting module name: Carbon Electra 2.vst3, version: 2.0.0.0, time stamp: 0x6a16df21
Exception code: 0xc0000409
Fault offset: 0x00000000003599c5
Faulting process id: 0x1F5C
Faulting application start time: 0x1DCEF0FEB789F80
Faulting application path: C:\Program Files\REAPER (x64)\reaper.exe
Faulting module path: C:\Program Files\Common Files\VST3\Scaler Music\Carbon Electra 2.vst3\Contents\x86_64-win\Carbon Electra 2.vst3
Report Id: a40c09a4-6fb7-4fb1-b863-824df847e291
Faulting package full name:
Faulting package-relative application ID:

Faulting application name: reaper.exe, version: 7.7.3.0, time stamp: 0x6a076e19
Faulting module name: Carbon Electra 2.vst3, version: 2.0.0.0, time stamp: 0x6a16df21
Exception code: 0xc0000409
Fault offset: 0x00000000003599c5
Faulting process id: 0x82E8
Faulting application start time: 0x1DCEEFCDB72DE75
Faulting application path: C:\Program Files\REAPER (x64)\reaper.exe
Faulting module path: C:\Program Files\Common Files\VST3\Scaler Music\Carbon Electra 2.vst3\Contents\x86_64-win\Carbon Electra 2.vst3
Report Id: e3a86df3-36b9-4a29-8c99-7d9ebf886da3
Faulting package full name:
Faulting package-relative application ID:

Thank you we’ve got this one and patched for 2.0.2 coming next week.

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That’s great, Davide. I look forward to putting it through its paces.

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