Trying to sync with LastFM I got the following error (copied from the error log)
12/02/2020 00:28:23 - 10.0.18363.0 - 3.3.7346.39560P - System.ArgumentOutOfRangeException: Value to add was out of range.
Parameter name: value
at System.DateTime.Add(Double value, Int32 scale)
at #=z4VG3kz3_stZJTXCKz7012M0OBsFLWvVVeQ==.#=zuVypi0dGIfQTHCjWnQ==()
at #=z0hU1t27NCSdDuEFG2i9wmLbFI3ZV.#=zUc8xydUFs3Rk(List`1 #=zmm7SkLN6RqHrAHNazD0R1jM=, Boolean #=z8hkV05OmHM1E, Boolean #=zxkrrWAWoHcP5xXED1$HnL5VHUAoa)
at #=z0hU1t27NCSdDuEFG2i9wmLbFI3ZV.#=z5tv6vW9asliD(Object #=zUcT$s2I=)
Again the portable version is the offending version. The version on the desktop works fine but the one on my portable ssd produces the above error.