Does some one else have "invalid" vouchers?

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I have issued vouchers with the attached settings. Then went to Status page to test the vouchers and turned out that about 20% are bad - "invalid: TYPO Invalid magic"
I'm running on 2.1.1-PRERELEASE (amd64) built on Wed Jan 22 16:56:12 EST 2014.

Anyone else with the same issue?

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Problem solved!
Exporting the vouchers to excel file cuts the zero in front of the codes by default…