Strobemediaplayback Exception

I’m trying strobemediaplayback extension player for playing videos my app and when try to play videos it shows an exception like this

The asset "/Applications/MAMP/htdocs/Research/protected/extensions/smp\smp_source" to be published does not exist. 

The extension link below:

How it can solve?

It looks like something in the smp assets publishing code is setting the DIRECTORY_SEPERATOR between smp and smp_source