Cannot properly process mpeg2 .ts file both as input and output format

[zpfbj0]

Avidemux cannot properly process mpeg2 .ts file, both as input and output format. The .ts file can be opened, but without audio track. And it cannot be saved as a new .ts file. I select Mpeg TS Muxer (ff) and  save the file, it prompts  "cannot open". I have tried several .ts files and all of them can be played well in media player. These .ts files have mpeg2 video and aac audio tracks.
My system is Windows 7 Home Premium SP1(64bit). The Avidemux is the newest version now(r8499, 64bit).
Here are the screenshots.
Attach 1.File info. No audio and the video AR is incorrect.
Attach 2.Output Setting
Attach 3.Error Message

[mean]

what version ? can you try with a nightly ?