First off, I am rather new a Swift development. I come from a Microsoft C#.Net background.I wrote this applicaiton some time ago for MacOS 10.11 using some version of Swift. When I opened it in XCode 9.4 and coverted it to Swift 4 and then fixed all the errors I ran it. When the app instatiates NSOpenPanel I see three warnings that files are not found. These files were at one time on my computer. I have not yet found a way to clear these cached filenames.I would not be concerend about it except I am getting this weird errorerror: use of undeclared identifier '$arg' * thread #9, queue = 'quicklook.pluginload', stop reason = breakpoint 1.2 * frame #0: 0x00007fff64c7c1f6 libc++abi.dylib`__cxa_throw frame #1: 0x00007fff4a909c1f Security`Security::UnixError::throwMeNoLogging(int) + 61 frame #2: 0x00007fff4a6b7768 Security`Security::safeCopyFile(char const*, unsigned int, char const*, unsigned short) + 1174 frame #3: 0x00007fff4a6b6531 Security`Security::MDSSession::updateDataBases() + 1863 frame #4: 0x00007fff4a70
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