Exception occurring on launch

[jesuitx]

This exception occurs everytime I launch. Doesn't seem to affect functionality, but should probably be looked at anyway.

2016-05-04 15:26:19.160 Spotify[6011:9623947] NSWindow warning: adding an unknown subview: <NSTextField: 0x7fe17974ee30>. Break on NSLog to debug.
2016-05-04 15:26:19.161 Spotify[6011:9623947] Call stack:
(
	0   AppKit                              0x00007fff972f08bb -[NSThemeFrame addSubview:] + 107
	1   Spotify                             0x0000000103407a7c _ZN5boost6threadC2EOS0_ + 708300
	2   Spotify                             0x0000000103408053 _ZN5boost6threadC2EOS0_ + 709795
	3   Foundation                          0x00007fff95665f5e __NSThreadPerformPerform + 279
	4   CoreFoundation                      0x00007fff9a19a881 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
	5   CoreFoundation                      0x00007fff9a179f37 __CFRunLoopDoSources0 + 423
	6   CoreFoundation                      0x00007fff9a1794df __CFRunLoopRun + 927
	7   CoreFoundation                      0x00007fff9a178ed8 CFRunLoopRunSpecific + 296
	8   HIToolbox                           0x00007fff919e3935 RunCurrentEventLoopInMode + 235
	9   HIToolbox                           0x00007fff919e3677 ReceiveNextEventCommon + 184
	10  HIToolbox                           0x00007fff919e35af _BlockUntilNextEventMatchingListInModeWithFilter + 71
	11  AppKit                              0x00007fff972d5efa _DPSNextEvent + 1067
	12  AppKit                              0x00007fff972d532a -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
	13  AppKit                              0x00007fff972c9e84 -[NSApplication run] + 682
	14  Chromium Embedded Framework         0x0000000104f0c3ce cef_time_delta + 412350
	15  Chromium Embedded Framework         0x0000000104f0ba54 cef_time_delta + 409924
	16  Chromium Embedded Framework         0x0000000104f411b3 cef_time_delta + 628899
	17  Chromium Embedded Framework         0x0000000104f2fb1d cef_time_delta + 557581
	18  Spotify                             0x00000001036cc4a9 _ZN5boost16exception_detail19error_info_injectorINS_15condition_errorEEC2ERKS2_ + 2387561
	19  Spotify                             0x000000010340a0d6 _ZN5boost6threadC2EOS0_ + 718118
	20  Spotify                             0x00000001032e56b9 Spotify + 30393
	21  libdyld.dylib                       0x00007fff938af5ad start + 1
	22  ???                                 0x0000000000000001 0x0 + 1
)

You're welcome.