CF7 - Mail without Data

Hi everyone!
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I have a valid CF7 Version on my website.
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I'd made an Form with Data Upload and some other fields. But always when i send the form, i get an Mail with the Field-Name but no Data!
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I'd tried to make the form new and with only 4 fields but always the same, Mail but no Data!
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Please help me!
To my Form

Hi mhauser,
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I suggest that you add the Debug Behaviour and see if this information helps you.
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Bob

Hi @mhauser
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I don't know what you do, but it's work very well. I use that in my forms and it's OK...