Hello Richard
Same name and same problem here too!
It looks as if field 2a is coupled on field 1b as a integrated frame, then 3a to 2b, 4a to 3b and on and on.....
Or is it an unwanted progressive output of the sharpened shots when exported? That could be also the case.
I used the sharpening effect in a low grade (+10% to +25%) to sharpen up my old S-VHS tapes on pinnacle 11, with very good results, but the output to disk or file for this effect on pinnacle 12 is a real disaster.
To work around this problem I have re-installed my pinnacle 11 next to the 12 version.
The 11 is only used on produced files from 12 to sharpen them with a preserved fluid motion, or to presharpen other avi and mpeg-2 files before handling in pinn 12.
I myself am wondering if the problem with version 12 can be a conflict with picasa3 and it's new videoplayback, but removing picasa3 photoviewer gives no positive result on the behaviour of the pinncle 12 sharpening tool.
Strangely the stroboscopic movement does not appear when the rendered timeline is played back.
For now my only advise is: Two pinnacle versions next to eachother for different tasks, wich is unnesecery complicated. I hope pinnacle will have a solution!
Richard, The Netherlands