I noticed. 
In the meantime, here's a new set of builds. 
http://fs2source.warpcore.org/exes/latest/February2006/20060212-Goober5000.rar
I tested it...
Resuming:
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-The "Nebula No Limited Sensors BUG" FIXED
-The "Jump to Desktop" BUG in FS_port in Missions "Enter the Dragon and Failure to comunicate" STILL
-Derelict MOD, No problems so far.
-Sthealth fighters still not working. (use "Proving Grounds" for test)
-The IFF BUG, FIXED
-Fs_port Bombers: WORKING (that mean that their use his bombs).
-Crash to Desktop on launching Helios (sometimes) : FIXED use "Bearbaiting" as a test.
Overall... is a good build, but you need to change to 1/25 en FS_port to finish these two missions.
Any idea of what is the problem which the Sthealths?
If should be say 3.6.8?