loading ULT doesn't work sometimes

[jonorthwash]

I sometimes get errors like this when trying to load data using "read unannotated":

Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python3.8/tkinter/__init__.py", line 1883, in __call__
    return self.func(*args)
  File "/usr/lib/python3.8/tkinter/__init__.py", line 3943, in __call__
    self.__callback(self.__value, *args)
  File "/data/Documents/Research/PhonLab/UltraTrace/ultratrace/modules/dicom.py", line 107, in chooseMethod
    self.reader = cls(dcm)
  File "/data/Documents/Research/PhonLab/UltraTrace/ultratrace/util/framereader.py", line 103, in __init__
    arr = np.ndarray(shape=sh, buffer=dt, dtype='uint8')
TypeError: buffer is too small for requested array