Dear Allin,
In a WLS estimation when the weight variable contains zeros gretl stops
executing saying that "Weight variable is not a dummy but contains zeros"
The same worked perfectly before with the observations weighted 0 being
simply dropped
from the estimation.
Here's a basic code for replication
<hansl>
nulldata 50
series x = normal()
series y = normal()
series w = uniform()
w[1]=0
wls w y x
</hansl>
Best,
Artur