02.12.14 18:54:43,559 Mail[330]: *** Assertion failure in -[MCMutableMessageHeaders headersForKey:], /SourceCache/Mail/Mail-1993/MailCore/Message/MCMessageHeaders.m:736
02.12.14 18:54:43,559 Mail[330]: An exception occurred during invocation of -[ComposeBackEnd _synchronouslyAppendMessageToOutboxWithContents:]
02.12.14 18:54:43,559 Mail[330]: Use -addressListForKey: for address header keys
02.12.14 18:54:43,571 Mail[330]: (
	0   CoreFoundation                      0x00007fff8b62464c __exceptionPreprocess + 172
	1   libobjc.A.dylib                     0x00007fff8a4966de objc_exception_throw + 43
	2   CoreFoundation                      0x00007fff8b62442a +[NSException raise:format:arguments:] + 106
	3   Foundation                          0x00007fff8ac425b9 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195
	4   MailCore                            0x00007fff8f81e13b -[MCMessageHeaders headersForKey:] + 188
	5   GPGMail                             0x00000001065be7c3 -[ComposeBackEnd_GPGMail _newPGPInlineBodyDataWithData:headers:shouldSign:shouldEncrypt:] + 521
	6   GPGMail                             0x00000001065bc7d5 -[ComposeBackEnd_GPGMail MA_makeMessageWithContents:isDraft:shouldSign:shouldEncrypt:shouldSkipSignature:shouldBePlainText:] + 4145
	7   Mail                                0x00000001044b13bd Mail + 648125
	8   CoreFoundation                      0x00007fff8b4fd33c __invoking___ + 140
	9   CoreFoundation                      0x00007fff8b4fd192 -[NSInvocation invoke] + 290
	10  MailCore                            0x00007fff8f8490cc -[MCMonitoredInvocation invoke] + 242
	11  MailCore                            0x00007fff8f8731d4 -[MCThrowingInvocationOperation main] + 48
	12  MailCore                            0x00007fff8f7fb71d -[_MCInvocationOperation main] + 426
	13  Foundation                          0x00007fff8ab5759c -[__NSOperationInternal _start:] + 653
	14  Foundation                          0x00007fff8ab571a3 __NSOQSchedule_f + 184
	15  libdispatch.dylib                   0x00007fff8f799c13 _dispatch_client_callout + 8
	16  libdispatch.dylib                   0x00007fff8f79d365 _dispatch_queue_drain + 1100
	17  libdispatch.dylib                   0x00007fff8f79eecc _dispatch_queue_invoke + 202
	18  libdispatch.dylib                   0x00007fff8f79c6b7 _dispatch_root_queue_drain + 463
	19  libdispatch.dylib                   0x00007fff8f7aafe4 _dispatch_worker_thread3 + 91
	20  libsystem_pthread.dylib             0x00007fff8cac06cb _pthread_wqthread + 729
	21  libsystem_pthread.dylib             0x00007fff8cabe4a1 start_wqthread + 13
)
02.12.14 18:54:49,408 Mail[330]: Stream 0x600000308040 is sending an event before being opened