Good shout (potentially). I've got a large number of error messages along these lines in the log:
15/12/2014 19:31:23 - 6.1.7601.65536 - 2.5.5461.35277 - System.InvalidOperationException: Failed to compare two elements in the array. ---> System.Threading.ThreadAbortException: Thread was being aborted.
at System.Number.FormatInt32(Int32 value, String format, NumberFormatInfo info)
at #=qN$uPk1RjSSIHqx69ocqsbjrhbEybCDXufCb42QZIueO6iM6LRHcJvC6DVeKFyVTu.#=qMP$1_lqmuS17G1zamSjKhA==(Boolean #=qdLvb9kiR2E6e_hLin985Jw==)
at #=qo4SC_S3ZzUEQtquMz5OMfU8nHwin4SDRyEjS4qP0pI2iagpbKizOPOeIaLhQtMlT.#=qlBuWSNCRj0GCCb0ee8tMLA==(#=qCXuDbbg5_wvV$WTF7bhxdfY0EsXpHoslctC$Vq4yIGZpgjmwsUSd9C7FTD2BmplA #=qwXdpZ$gJQA8dht4sGYyGJw==, #=qCXuDbbg5_wvV$WTF7bhxdfY0EsXpHoslctC$Vq4yIGZpgjmwsUSd9C7FTD2BmplA #=q5bSZ0o6H7DYxJBbhqGXEgg==, TagCode #=qxrvbiV_lwBEOYYctgUwv_Q==, SortOrder #=qRtjjbJAdokQzBYx7BFWE3A==)
at #=qofFJzLaWBiLVSSp4ihCXUarsOx3kYdVIY_kXAtUZP9Y=.#=qFt73CKebqXkBmTDpdjxl318R3yQBdlTlmARP9VHk_ck=.Compare(#=qBag0J7IiY1Xe9pTKlGwks7ppeTNxFUurT8enGDJ70Og= #=qvRKvvIDr_lJAkrNSPkV3AA==, #=qBag0J7IiY1Xe9pTKlGwks7ppeTNxFUurT8enGDJ70Og= #=qlE7Z71nYumApKRAY5FgfSw==)
at System.Collections.Generic.ArraySortHelper`1.SwapIfGreater(T[] keys, IComparer`1 comparer, Int32 a, Int32 b)
at System.Collections.Generic.ArraySortHelper`1.DepthLimitedQuickSort(T[] keys, Int32 left, Int32 right, IComparer`1 comparer, Int32 depthLimit)
at System.Collections.Generic.ArraySortHelper`1.DepthLimitedQuickSort(T[] keys, Int32 left, Int32 right, IComparer`1 comparer, Int32 depthLimit)
at System.Collections.Generic.ArraySortHelper`1.DepthLimitedQuickSort(T[] keys, Int32 left, Int32 right, IComparer`1 comparer, Int32 depthLimit)
at System.Collections.Generic.ArraySortHelper`1.DepthLimitedQuickSort(T[] keys, Int32 left, Int32 right, IComparer`1 comparer, Int32 depthLimit)
at System.Collections.Generic.ArraySortHelper`1.DepthLimitedQuickSort(T[] keys, Int32 left, Int32 right, IComparer`1 comparer, Int32 depthLimit)
at System.Collections.Generic.ArraySortHelper`1.DepthLimitedQuickSort(T[] keys, Int32 left, Int32 right, IComparer`1 comparer, Int32 depthLimit)
at System.Collections.Generic.ArraySortHelper`1.Sort(T[] keys, Int32 index, Int32 length, IComparer`1 comparer)
--- End of inner exception stack trace ---
at System.Collections.Generic.ArraySortHelper`1.Sort(T[] keys, Int32 index, Int32 length, IComparer`1 comparer)
at System.Array.Sort[T](T[] array, Int32 index, Int32 length, IComparer`1 comparer)
at System.Array.Sort[T](T[] array, IComparer`1 comparer)
at #=qEfS6YdgBlbNG4OGfJXRKNDnWsqdZqkWV7PWne2nJBH8=.#=qtmA4ZBISmrH5ohyeF1JKtQ==.#=q51stGu37AYkj2Tbc2WoQJA==._Lambda$__9(Object #=q0c5alRi$u66ySG6cwVAurg==)
Based on my listening habits, and judging by the time of that one, I think they're probably related to when I'm using my playlist mixers.
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