I'm using OS 10.12.4 and I've uninstalled and reinstalled Thunderbird several times. I've also deleted all of my add-ons and I've repaired the mailboxes I use often. Still, randomly, Thunderbird is crashing, several times a day. It's literally the only application that ever crashes on my computer. It's been happening for several month. Below is the latest crash report. Can anyone tell me what to do? AdapterDeviceID: 0x6821 AdapterVendorID: 0x1002 Add-ons: %7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:52.1.0 BuildID: 20170428151619 ContentSandboxCapable: 1 ContentSandboxLevel: 0 CrashTime: 1494431693 EMCheckCompatibility: true EventLoopNestingLevel: 1 FramePoisonBase: 7ffffffff0dea000 FramePoisonSize: 4096 InstallTime: 1494257988 Notes: AdapterVendorID: 0x1002, AdapterDeviceID: 0x6821FP(D00-L1100-W00000000-T0100) GL Context? GL Context+ ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6} ProductName: Thunderbird ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 1097 StartupCrash: 0 StartupTime: 1494430599 TelemetryEnvironment: {"build":{"applicationId":"{3550f703-e582-4d05-9a08-453d09bdfdc6}","applicationName":"Thunderbird","architecture":"x86-64","buildId":"20170428151619","version":"52.1.0","vendor":null,"platformVersion":"52.1.0","xpcomAbi":"x86_64-gcc3","hotfixVersion":null,"architecturesInBinary":"i386-x86_64"},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":16384,"virtualMaxMB":null,"cpu":{"count":8,"cores":4,"vendor":"GenuineIntel","family":6,"model":70,"stepping":1,"l2cacheKB":256,"l3cacheKB":6144,"speedMHz":2800,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAVX2"]},"os":{"name":"Darwin","version":"16.5.0","locale":"en-US"},"hdd":{"profile":{"model":null,"revision":null},"binary":{"model":null,"revision":null},"system":{"model":null,"revision":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","adapters":[{"description":null,"vendorID":"0x1002","deviceID":"0x6821","subsysID":null,"RAM":null,"driver":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":2048,"screenHeight":1152,"scale":1},{"screenWidth":1440,"screenHeight":900,"scale":2}],"features":{"compositor":"basic"}}},"settings":{"blocklistEnabled":true,"e10sEnabled":false,"e10sCohort":"unknown","telemetryEnabled":false,"locale":"en-US","update":{"channel":"release","enabled":true,"autoDownload":true},"userPrefs":{"browser.cache.disk.capacity":358400,"privacy.donottrackheader.enabled":true},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null},"profile":{"creationDate":14138},"addons":{"activeAddons":{},"theme":{"id":"{972ce4c6-7e08-4474-a285-3208198ce6fd}","blocklisted":false,"description":"The default theme.","name":"Default","userDisabled":false,"appDisabled":false,"version":"52.1.0","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":15168,"updateDay":17284},"activePlugins":[{"name":"Shockwave Flash","version":"25.0.0.171","description":"Shockwave Flash 25.0 r0","blocklisted":false,"disabled":false,"clicktoplay":false,"mimeTypes":["application/x-shockwave-flash","application/futuresplash"],"updateDay":17295}],"activeGMPlugins":{},"activeExperiment":{},"persona":null}} Theme: classic/1.0 Throttleable: 1 UptimeTS: 1093.54389163 Vendor: Version: 52.1.0 useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.