That *is* the actual command (the /out isn't followed by anything, which is the problem). It's very odd because, again, the action simply uses Win32 APIs for obtaining a temporary path/filename. Can you send to
support@kinook.com or post the info from Help | About | Install Info and the output when pasting the following steps before your Make VB6 step and building?
<step action='Log Message'>
<Message>TEMP = '%TEMP%'</Message>
<name>Log TEMP</name>
</step>
<step action='Log Message'>
<Message>TMP = '%TMP%'</Message>
<name>Log TMP</name>
</step>