Error calling 100 MultiZ alignment using Extract MAF blocks tool

I tried to use the Extract MAF blocks tool via website.
As the interval, I chose a BED file of hg19 assembly that I have uploaded.
As the MAF source, I chose the “100-ways multiZ new (hg19)” out of the option of the “locally fetched alignments”.

I executed the tool, and immediately received the following red error message:
“An error occurred with this dataset:
Fatal Error: The MAF source specified (100_WAY_MULTIZ_v2_hg19) appears to be invalid.”

Is there anything I can do in order to solve it? Or is it a bug?

Thank you,