- - [19/Apr/2013:10:31:20 -0400] "GET 
 HTTP/1.1" 200 - 
 "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_3) AppleWebKit/537.31 (KHTML, 
like Gecko) Chrome/26.0.1410.65 Safari/537.31"
galaxy.webapps.galaxy.api.datasets ERROR 2013-04-19 10:31:21,775 Error in 
dataset API at listing contents: unpack requires a string argument of length 4: 
unpack requires a string argument of length 4
Traceback (most recent call last):
line 41, in show
    is_true( kwd.get( 'retry', False ) ) )
line 96, in _converted_datasets_state
    if not data_provider.has_data( chrom ):
 line 1037, in has_data
    f, bbi = self._get_dataset()
 line 1170, in _get_dataset
    return f, BigWigFile(file=f)
  File "bigwig_file.pyx", line 127, in bx.bbi.bigwig_file.BigWigFile.__init__ 
  File "bbi_file.pyx", line 119, in bx.bbi.bbi_file.BBIFile.__init__ 
  File "bbi_file.pyx", line 129, in bx.bbi.bbi_file.BBIFile.open 
 line 30, in __init__
    if struct.unpack( ">I", bytes )[0] == magic:
error: unpack requires a string argument of length 4

Is this a bug or have I done something unexpected?

I'm trying to use the trackbrowser to visualize some bam files that I aligned 
to a genome that I had to install manually (Zea_mays_B73_RefGen_v2), maybe i've 
screwed something up.

I was initially able to see some reads, but after reverting to the sample 
datatypes file and restarting galaxy i can't see anything anymore.
I also added  a .2bit file to twobit.locs

maybe that's related...

I've tried copying the bams to a new history  - and they seem to be reindexing 
as a result, but I still see no reads.

Any ideas?

Brad Langhorst

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