Hi, sent again. Thanks
Your log shows that
1. you were playing an AVI file, not an MKV file when the crash occurred;
2. MC loaded a source filter, i.e. you selected a source filter in MC configuration for AVI type;
3. the crash occurred when MC tried to build a DirectShow graph.
Which source filter did you select for AVI files? For AVI files, Automatic should be good enough in most cases. AVI files normally are handled by a source filter called "File Source (Async.)". DirectShow would automatically load this filter along with "AVI Splitter" if you do not select anything for source filter. Haali Media Splitter can also handle AVI files. However, its use is not necessary and should be discouraged unless you have a specific reason to use it for AVI files. The only specific reason that I know is that your AVI files contain multiple audio streams and you want to be able to select which one you want to hear (and not hearing all of them). If this is not the situation, I would just leave Source Filter at "Automatic".
If de-selecting source filter does not help, you can look at removing filters from your selected "Other Filters" list. I see that you selected "ffdshow Audio Decoder", "ffdshow subtitles filter", and "ffdshow Video Decoder". I'd remove them one by one and see if the crash goes away.
You selected VMR9 as your video renderer. Normally this is perfectly fine. There however can be DirectShow filters that just would not work well with VMR9. So you can try selecting a different renderer, such as Enhanced Video Renderer, or Video Mixing Renderer 7. Third-party renderers such as Haali Video Renderer can be used, but with caution. They may not work for all situations, and thus should be used only if you know the stuff well.
Crash during graph-building usually suggests either corrupt file or corrupt DirectShow filters. It could be that your DirectShow system is messed up badly by different applications installing different, conflicting DirectShow filters or different, conflicting versions of them. There are tools that can help you sort out problems like this, but I do not remember what they are, only knowing that someone suggested something on this board. Maybe someone will jump in and point you to the right direction.