Scrivener app crashing on macOS Sierra because of growl.framework

I recently upgraded to macOS Sierra and moved over my El Capitan stuff over via a Time Machine backup. Everything works fine on Sierra except for Scrivener, a writing app. The app constantly crashes, and here is the beginning of the crash log: Crashed Thread: 0 Dispatch queue: com.apple.main-thread 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 VM Regions Near 0: --> __TEXT 0000000000001000-0000000000370000 [ 3516K] r-x/rwx SM=COW /Applications/Scrivener.app/Contents/MacOS/Scrivener Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.CoreFoundation 0x945d6172 CFDictionaryGetValue + 34 1 com.growl.growlframework 0xc0001e67 +[GrowlApplicationBridge isGrowlRunning] + 81 2 com.literatureandlatte.scrivener2 0x002d7a67 0x1000 + 2976359 3 libobjc.A.dylib 0x9ee491b2 CALLING_SOME_+initialize_METHOD + 31 4 libobjc.A.dylib 0x9ee3c927 _class_initialize + 479 5 libobjc.A.dylib 0x9ee3c587 lookUpImpOrForward + 117 6 libobjc.A.dylib 0x9ee3c50d _class_lookupMethodAndLoadCache3 + 30 7 libobjc.A.dylib 0x9ee3c074 objc_msgSend + 116 8 com.apple.Foundation 0x95d42ad8 __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_2 + 32 9 com.apple.CoreFoundation 0x94665844 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20 10 com.apple.CoreFoundation 0x94665734 _CFXRegistrationPost + 452 11 com.apple.CoreFoundation 0x94665486 ___CFXNotificationPost_block_invoke + 54 12 com.apple.CoreFoundation 0x94623753 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1699 13 com.apple.CoreFoundation 0x9462258d _CFXNotificationPost + 637 14 com.apple.Foundation 0x95cfd8e4 -[NSNotificationCenter postNotificationName:object:userInfo:] + 71 15 com.literatureandlatte.ScrAppKit 0x00525028 -[KBTextStorage replaceCharactersInRange:withString:] + 556 16 com.apple.AppKit 0x92702f9b -[NSTextView insertText:replacementRange:] + 1744 17 com.apple.AppKit 0x92702748 -[NSTextView insertText:] + 272 18 com.apple.AppKit 0x92919c9a -[NSTextView(NSKeyBindingCommands) insertNewline:] + 473 19 libobjc.A.dylib 0x9ee40d1e -[NSObject performSelector:withObject:] + 59 20 com.apple.AppKit 0x9281e435 -[NSResponder doCommandBySelector:] + 71 21 com.apple.AppKit 0x9272009d -[NSTextView doCommandBySelector:] + 181 22 com.apple.AppKit 0x9271ffc6 -[NSTextInputContext(NSInputContext_WithCompletion) doCommandBySelector:completionHandler:] + 107 23 com.apple.AppKit 0x9271ff51 -[NSTextInputContext doCommandBySelector:] + 46 24 com.apple.AppKit 0x9271fe7f -[NSTextInputContext _handleCommand:] + 83 25 com.apple.AppKit 0x92700a45 -[NSKeyBindingManager(NSKeyBindingManager_MultiClients) interpretEventAsCommand:forClient:] + 1490 26 com.apple.AppKit 0x92f324d2 __84-[NSTextInputContext _handleEvent:options:allowingSyntheticEvent: I contacted Scrivener's tech support, and they said it's crashing because Growl is installed. I checked on my computer, and I don't see Growl running. I don't remember having installed it or ever having used it; I just use the default notification system on macOS. I checked my ~/Library/Preferences and ~/Library/Application Support, and there is nothing named Growl or growl in there. I checked via an app remover, and it didn't find anything named growl/Growl on my system either. Neither could I find growl as a running process in the Activity Monitor. Anybody have a clue what might be happening over here? Thanks!