I am using the 0.2.0_1 version:
$ python -c "import torch; print torch.__version__"
0.2.0_1

torch.cuda.FloatTensor works for me as well; but torch.cuda.LongTensor doesn’t.
$ python -c "import torch; torch.cuda.LongTensor(3).pow(2)"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
AttributeError: 'torch.cuda.LongTensor' object has no attribute 'pow'