couldn't open timecode file

[kingcrimsonster]

Now tested Hybrid_dev_2019.09.05-204823
Very Strange... I have a lot more wmv files that have a normal working avisynth preview, when DirectShowSource is turned off.
Normally working avisynth preview file

ID : 2
Format : VC-1
Format profile : MP@ML
Codec ID : WMV3
Codec ID/Info : Windows Media Video 9
Codec ID/Hint : WMV3
Description of the codec : Windows Media Video 9
Duration : 2 min 54 s
Bit rate mode : Variable

File, that in avisynth preview window I see only a few initial minutes of the file when I move the slider from the beginning of the end.

ID : 1
Format : VC-1
Format profile : Main
Codec ID : WMV3
Codec ID/Info : Windows Media Video 9
Codec ID/Hint : WMV3
Description of the codec : Windows Media Video 322694968 - 2-pass VBR
Duration : 29 min 0 s
Bit rate : 5 000 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9