The error reported here it's about FF and REW frame by frame not about jump 1, 2 or 10 seconds. Gabest OGG splitter (that I usually use) don't allow you to do a frame by frame rewind of the file just until the last keyframe played. It doesn't allow you to go back more then that keyframe.
Uninstalled Gabest, default becomes Nero OGG splitter. No luck with it either.
So, I think adicoto it's not right
, the fault it's elswhere.
@ Ico-man
Wich splitter do you use ?