[EB] weight problem

[Antonio Alaminos]

Dear Meinhard,
I have a problem when weighting the Eurobarometer Trend File.
If a weight by sample I get the following message

 >Warning # 3211
 >On at least one case, the value of the weight variable was zero, negative,
 >or missing.  Such cases are invisible to statistical procedures and graphs
 >which need positively weighted cases, but remain on the file and are
 >processed by non-statistical facilities such as LIST and SAVE.

If you weight and ask for the intervals  in the weight for each barometer

Informe
SAMPLE WEIGHT
EUROBAROMETER NUMBER    Mínimo    Máximo
ECS70    ,42    4,89
ECS71    ,09    12,73
ECS73    ,05    15,76
EB2    ,19    6,41
EB3    ,07    6,67
EB4    ,15    5,10
EB5    ,09    7,21
EB6    ,22    7,16
EB7    ,23    4,70
EB8    ,18    9,13
EB9    ,18    4,25
EB10    ,20    11,38
EB10A    ,19    8,46
EB11    ,11    6,34
EB12    ,16    13,09
EB13    ,10    7,66
EB14    ,10    5,56
EB15    ,23    7,18
EB16    ,12    8,95
EB17    ,11    8,56
EB18    ,07    7,94
EB19    ,10    14,62
EB20    ,14    6,59
EB21    ,05    6,61
EB22    ,10    7,18
EB23    ,05    8,64
EB24    ,04    13,66
EB25    ,04    13,57
EB26    ,09    6,90
EB27    ,06    8,42
EB28    ,06    6,84
EB29    ,09    8,43
EB30    ,09    6,91
EB31    ,09    8,05
EB31A    ,04    7,52
EB32A    ,10    5,16
EB32B    ,12    5,27
EB33    ,17    4,52
EB340    ,13    4,42
EB341    ,15    5,57
EB350    ,18    4,23
EB351    ,19    4,48
EB36    ,11    4,79
EB370    ,10    5,52
EB371    ,08    4,72
EB380    ,14    4,69
EB381    ,17    4,43
EB390    ,17    4,00
EB391    ,05    4,75
EB40    ,15    3,91
EB410    ,12    4,93
EB411    ,14    4,74
EB42    ,11    4,18
EB430    ,12    4,03
EB431    ,15    4,31
EB431B    ,14    4,55
EB440    ,06    4,38
EB441    ,11    5,48
EB451    ,08    3,48
EB460    ,10    4,21
EB461    ,01    3,88
EB47    ,28    4,03
EB471    ,08    3,76
EB472    ,06    4,58
EB48    ,11    4,52
EB49    ,08    5,01
EB500    ,05    6,71
EB501    ,04    5,80
EB510    ,06    4,36
EB511    ,13    6,42
Total    ,01    15,76

You get the message I put earlier.
I think the problem is 1997. But not sure.
All the best,
Antonio Alaminos
University of Alicante