I solved the problem with the bright green socks! Frogged back to the heel, changed to thinner needles, and knitted back down again with additional decreases. Now I only have to remember what I did on the second sock, which is coming along nicely.
But... the Autumn Rose sweater... Somehow I misread the instructions and used needles 3.5 to knit about the first 12cm or so. The sweater was HUGE! Then I discovered the mistake, it should have been needles 3. But the sweater was approximately 20cm too wide, and just downsizing the needles by .5 wont do.
So I ripped the whole thing, restarted on needles 2.5 which is .5 less than called for and perfect according to my swatching (which I didn´t do last time). And, changed to one size smaller.
Problem solved? Don´t know yet, but at least I´m on it again. Don´t like the 3stockinette - 1purl edge at the bottom, and I definitely don´t like to redo it. But hopefully, this time the sweater will fit me.