The problem is not the key Unsellable= (the key Sellable= doesn't exist btw)
It also has nothing to do with the Techlevel or IsBase.
The problem is, that the gaoldcc buildings have no buildup animation. A building can only be sold if it has a buildup.
Thus open your art.ini and search for these buildings.
Then add a dummy buildup e.g.
CODE
; Ruined C&C con yard
[GAOLDCC1]
Buildup=GUNFIRE ;just a dummy buildup anim
Foundation=2x2
Height=1
ExtraDamageStage=false
NewTheater=yes
Remapable=yes
DemandLoad=true
Now they should be sellable.
This post has been edited by Lin Kuei Ominae: Nov 18 2009, 10:35 AM