June 2, 200620 yr Hello: Please forgive if this has been discussed in the past but I have not seen a reference in the last couple of pages here.I bought and installed 737 800/900 expansion back in Feb and then got busy and didn't fly for awhile. Before installing the expansion my NG software worked perfectly and I had no problems. Since installing the expansion my FMC does not calculate the following elements correctly: Fuel, ETA's, V speeds, T/D are hundreds of mile off. Has this anomalie been seen before and if so is there a solution? If not any comments or speculations?Any help would be greatfully apprciated.John
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