Both the sequences are corrupt. Your sequence was missing the brackets 
Escherichia coli str. K-12 substr. MG1655

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In order to get it to produce some output, I added some brackets 
[Escherichia coli str. K-12 substr. MG1655]

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In reply to Re^5: A strange error message with Bio::SeqIO by Khen1950fx
in thread A strange error message with Bio::SeqIO by genbank

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