Be very careful here. 
Temporary variables have names like __000000. 
That "__" is _two_ underscore characters. Depending
on the font you are using, it may look like a single
character. 
If you 
drop _* 
you will drop any temporary variables that should have
been dropped but also any variables that begin with 
a _single_ underscore. Lots of official programs, 
some unofficial programs and no doubt some do files 
create such variables. Dropping them could lose you 
valuable information. 
Nick 
[email protected] 
casta
 
> I have 6 programs I used since years and I got also the new 
> error message 
> with  "_000000 already exists " and so on. I finally add the 
> following line 
> at the end of the programs which causes "_0000" message :
> capt drop _*
> The error came only since the new verstion of stata (18/5/04)
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