Render Length discrepancy 25p timeline

i having problem rendering of 25p timeline.  speedgrade renders timeline (which 35 seconds or  875 frames) , says has completed 875 frames

but when import avid media composer 25p project, clip now  35 seconds & 7 frames - adds 1 frame every 5 seconds!

 

i tried rendering different codec , same result.  checked speedgrade qt files 3rd party tool , indeed 35 seconds & 7 frames, not avid import/transcode problem.  appreciated.

 

also - after rendering timeline, rendering  buttons in ouput panel  "render" & disabled "stop" replaced "pause" & "stop" , can find no way (other closing speedgrade , re-opening) them "render" condition.

<update>  i've discovered, checking processes running under windows 7, after render complete process "quicktimeoop.exe *32 - adobe speedgrade child process" continues in appears infinite loop using quite lot of cpu power - if manually stop process, speedgrade rendering buttons return should be.

<udate#2>  i've tried other output formats , discovered problem exists when rendering out quicktime file.  though feedback says 100% complete, rendering stuck in infinite loop , when manually kill quicktimeoop.exe *32 process seedgrade reorts error , "done"

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