List of known issues and bugs:

1. -rkf option may not work in all cases. In particular -rkf works only with following video compression formats: MP43, MP42 and WMV3. Still it is not quarantied that those formats will be processed correctly. This is connected with the need of decoding and encoding video frames, which is done using VCM drivers. It may happen that the driver used by AsfBin will not be 100% compatible with the codec used during creation of a given ASF file, what may cause the image to be scrabled or just black.
   Please check the output file(s) for a correct results. It is sufficient to check only first few seconds of the resulting file and segment junctions.
2. Some ASF files seems to be of the same format, however in fact they are created using different encoding software. In such a case the video can go scrambled after crossing the junction.
   So far AsfBin is unable to compare the type of compression so precisely to avoid joining such files together.

Bugs reporting:
Before reporting a bug please read attached Readme.txt and check whether a command you typed is valid. Also check if the bug you found isn't already listed on the Known bugs List above.
Then if You are REALLY sure that something is wrong, please add a -debug switch and redirect the output to some text file. Then, please, attach this file together with the bug description sent in e-mail to me.
Without that log file it will be almost impossible to correct a bug.
Example:
A command causing an error:
asfbin -i some.asf -o test.asf -start 2:00 -dur 120
Then change that command into: asfbin -i some.asf -o test.asf -start 2:00 -dur 120 -debug > log.txt
Logs will be stored in the log.txt file.
I recommend also downloading the debug version of asfbin which can show more detailed description of the appearing error. It can be downloaded here.
Send a bug report to address with Subject "AsfBin Bugs Report".

All reports about language mistakes are also appreciated:)