Thanks, Mag. I'd never heard of DSS2, so I didn't realize it merely opens a file. I replaced that line with this:
avisource("D:\Video-Work\2014-NCAA-wv\2014-11-14.wv.KY-v-MS.lag.ac3-320.avi").ConvertToYV12()
When I run it in a script by itself (that line being the only line), it works fine. (I'm opening the .avs file as a video input file in VirtualDub. But when I have it at the top of your entire script, the script still bombs. The first few lines look like this:
avisource("D:\Video-Work\2014-NCAA-wv\2014-11-14.wv.KY-v-MS.lag.ac3-320.avi").ConvertToYV12()
sc = msup (for = 1)
vf = MAnalyse (sc, ISB = false)
vb=MAnalyse(sc,isb=true)
global frame_50 = MFlowInter(sc,vb,vf,time=50).SubTitle("Fix-50", size=12, align=3)
global frame_33 = MFlowInter(sc,vb,vf,time=33).SubTitle("Fix-33", size=12, align=3).trim(1,0)
.
.
.
It's still bombing (with VD's unhelpful message) and I know of no way to debug these scripts, esp. w/o knowing all the elements used. (I realize VD shouldn't be blamed for the cryptic message, as it's only receiving frameserved output.) Can you please look to see if you see some error in the rest of your script AS duplicated by me here? I pasted it from your Russian thread into Notepad, then into here (and my own script).