Steps to reproduce (the following is done on main-silver):

1. hg pull 
2. hg update (Brings me to fa7dfe4661de)
3. ant -f nbbuild clean build tryme
4. Switch to Services Tab
5. Expand "Databases Node"
6. Expand "Drivers"

=> The node is empty (this is the problem)

7. hg update -r b8419a0d6df9
8. Repeat steps 3-6

=> The node is still empty

9. hg update -r 8f13a2bb9ec4
8. Repeat steps 3-6

=> The node is filled with the predefined drivers (mysql, postgresql, oracle thin + oci)

The bad changeset is the direct successor of the last good one. Both changessets are the result of a bisect over a few hundred commits in core-main (the result from core-main was verified in main-silver).

Priority was set to P1 as this makes DB support unusable so
P1 - "Blocks another developer's progress, no workaround exists" applies

This was reported against cnd/Remote VCS because of the result of the bisect


If some one tests this and is confronted with this exeption: 

     [exec] WARNING [org.openide.filesystems.FileUtil]: Parameter file was not normalized. Was C:/Program Files/MySQL(class java.io.File) instead of /tmp/C:/Program Files/MySQL(class java.io.File)
     [exec] INFO [org.openide.filesystems.FileUtil]: Parameter file was not normalized. Was C:/Program Files/MySQL(class java.io.File) instead of /tmp/C:/Program Files/MySQL(class java.io.File)
     [exec] java.lang.IllegalArgumentException: Parameter file was not normalized. Was C:/Program Files/MySQL(class java.io.File) instead of /tmp/C:/Program Files/MySQL(class java.io.File)

This is a known problem, but not the cause of this. The above is a message from the mysql support module referring to the installation folder.