Zip Error: "Zip file structure invalid"

[Kerfufl]

It happens when the file already exists, and the "Action" is set to Add. If i delete the existing zip and rerun the step it runs successfully.

The zip step is:

<step action='ZIP Files' type='1'>
<Action type='3'>0</Action>
<Compression>5</Compression>
<Dest>%DIR_Build_Release%\%TMP_VDF%\ZIP\%TMP_VDF%. zip</Dest>
<Ext>*.*</Ext>
<Hidden type='11'>-1</Hidden>
<LogDetail type='11'>-1</LogDetail>
<Recurse type='11'>-1</Recurse>
<Source>%DIR_Staging%\%TMP_IX_ALLFLAVORS%</Source>
<indent type='3'>2</indent>
<name>Zip each flavor </name>
</step>