Good evening.
The only time currentTime is used in the plugin is during a skip. To skip the video to the end, it sets the current frame of the video currently playing to the last frame, which causes the video to end. I did this because I couldn't figure out how to make it actually abort the video playback, as I'm just using the built in video playback from rpg maker.
If I'm correct, you're getting this error because you're skipping videos, and he likely isn't because he's not. What the error actually means, though, is a mystery to me. It could be an issue with the actual video, as the error would seem to imply that it can't properly detect how long the video is to set the current time on the playback to the end of it.