When I pull down the category list while entering a transaction, if I scroll all the way to the top I see an account named "ACCT_157". If I look at a list of categories, it does not appear. If I enter it in a test transaction, then right click and select "see amounts paid to ACCT_157, it shows only the test transaction, it has not been used any other time. I did not create this category.
Any ideas of what this might be? I haven't tried deleting it yet.