The last time I installed BlueSoleil to debug the problems with have with it, it was simply broken. I used Bluesoleil 7 or 8 downloadable from http://www.bluesoleil.com/
. Not sure, from where you get such ancient versions like 1.60.
The query for bluetooth devices in range returned the wrong IDs, hence NXTs are not recognized.
Either bluesoleil was incompatible with the NXT's bluetooth module, or bluecove was broken. I haven't investigates this any further.
In your case however, the whole bluesoleil stack doesn't seem to be recognized. Still the the only known "workaround" might also apply in your case: simply uninstall bluesoleil and to use microsoft stack or broadcom drivers (=WIDCOMM stack).