I was trying to run a dataset through Picrust on the web-based Galaxy. I did the OTU table in Qiime as explained in http://picrust.github.com/picrust/tutorials/otu_picking.html#otu-picking-tutorial, with the command line: pick_closed_reference_otus.py -i $path/file.fasta -r $path/rep-set/97_otus.fasta -o $path/OTU_Table.biom. 

I uploaded the file in Get Data, and I want to run the Normalize by Copy Number step, but I get the following message History does not include a dataset of the required format / build.

I am not sure if when I generate the OTU Table I need to specify a particular format, or what the problem is. I would really appreciate some advice. 

I attach the biom file generated in case you need to take a look.

Thank you very much in advance.