Hi,
I'm pretty new to PS but I've imported some combination products OK.
The variation type/values are split into 2 columns.
The format for the two columns are:
Attribute (Name:Type:Position)* is the Attribute type
The "Name" value must be one of the "Attributes" listed under your back office Catalog->Attributes & Features
The "type" value determines how the combination option is shown on the page: select for drop-down menus, radio for radio buttons, color for colour boxes
I have no idea what "position" does and leave it at 0
Value (Value:Position)* is the values for the the previous column.
So, an example of, say. a black, small, tshirt would be:
"Attribute " column: Colour:select:0,Size:select:0
"Value" column: Black:select:0,S:select:0
Again, no idea what position is as I default to 0
I've attached one of my test options files for you to look at. Hope it helps.
Edit: this might help