Surface will not sweep along a path

I need to sweep a surface along a path (file attached) however when I attempt this is simply get the response 'unable to sweep 1 selected object'. I have used this path before an a similar surface and so know there is no problem with the path. I simply do not understand what the issue is. I have also tried lofting as well as extruding along the path and this does not work either. Please help!

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7 Answers

to be more exact about the corrupt path..the right halve is OK...double line is in the left part..so I deleted the left half...mirrored the right one..made a polyline
and....Sweep.....tataaaaaaaaa..it worked..
Do you know the command "overkill"?? just type it in and it will delete duplicated (double) lines......not much engineers know of this command, give it a try....you'll love it...

 
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Better to loose Acad all
together and get a version of Solidworks.
It is like comparing swines (acad) with pearls (SW or Inventor for that matter).....

 
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Simple solution....the path is NOT one line..I have checked the sketch and it are actually 2 lines...not one...so redraw the path as one line (make a polyline) and it will work

 
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Hans thank you so much for your swift response. However I do apologise, the line was originally one continuous line but I halved it in my attempts to find a solution. I attached the wrong drawing. So I do apologise, but even using the drawing you attached is will not sweep along this line and I don't know why. Would you mind trying yourself?

 
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path must be in polyline or the created lines must be in same plane...

 
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