Hello yambuu,
Sounds like you have two issues going on. One, the midi signal from your mixer drops and Two, your suffering from crashing.
What midi interface are you using to connect your DJM to your computer?
As far as crashing... 2.2 and 2.2.2 don't work well with Video SL. You need to downgrade to 2.1.1, 2.1, 2.0 -->
serato.com
Or you can try updating to the 2.3 Beta here -->
serato.com
If your still having issues I would go through this process:
Please open SSL.
Click the 'files' tab.
Click the 'rescan id3 tag' tab.
Let it finish scanning and then unplug your Rane hardware and press 'analyze files'.
If it starts analyzing files let it do its thing.
Once its done analyzing look through your 'all' section and delete ANY files that have a corrupt icon next to them (looks like a cd with a crack down the middle of it).
Hopefully that will fix your crashing issues.. and possibly your midi issues as well:)
