Budget Troubleshooting

[Bill]

I am having trouble implementing a budget in my ledger file.
Following the example in the manual, I have the following lines at the
start of my ledger.dat:

~ Weekly
   Expenses:Household  250.00 EUR
   Assets

However, this does not modify the output of the register when I use
the --budget flag.  That is,

ledger -Wb 2010-01-24 reg ^Exp
2010/01/22 - 2010/01/28         Expenses:Cash            373.63 EUR
373.63 EUR
                                Expenses:Clothing         50.88 EUR
424.51 EUR
                                Expenses:Dining           12.80 EUR
437.31 EUR
                                Expenses:Gifts           152.98 EUR
                                                         128.97 USD
590.29 EUR
 
128.97 USD
                                Expenses:Household       198.91 EUR
789.20 EUR
 
128.97 USD
                                Expenses:Other             4.00 EUR
793.20 EUR
 
128.97 USD
                                Ex:Transportation        471.07 EUR
1264.27 EUR
 
128.97 USD

and

ledger --budget -Wb 2010-01-24 reg ^Exp
2010/01/22 - 2010/01/27         Expenses:Household       198.91 EUR
198.91 EUR

My expectation is that the second command should show -51.09 EUR,
indicating my total expense vs. budget.  If I create a "clean"
ledger.dat with a budget line and a single transaction, I get the
expected output.

So something is wrong with my ledger.dat, but I can't figure out
what.  Any tips?

Thanks,
Bill