While going through FL files a few weeks ago I found some minor 'errors' from the release version of FL that still hadn't been caught.
The errors don't appear to cause problems for gameplay, which is one reason they were never caught. Although I posted in editing forums about it, I thought I should submit the list here too so it can be checked in the upcoming release of the SDK.

All of these errors are in 2 files. Below are the listings showing file names, followed by the line numbers and errant data.

1. Doubled "=" in some mission 4 scripts
This looks pretty simple; the 4 lines shown should simply have "= =" replaced with "="
Data\Missions\M04\m04.ini
(2760): Act_GiveObjList = = alert_red_wing_backup, alert_fighters_intercept
(2771): Act_GiveObjList = = alert_blue_wing_backup, alert_fighters_intercept
(2782): Act_GiveObjList = = alert_gold_wing_backup, alert_fighters_intercept
(2793): Act_GiveObjList = = alert_rogue_wing_backup, alert_fighters_intercept

2. Missing data values in navbar file
This is more complex since I don't know for sure what this should be. Someone suggested each should be followed by " = true". I was able to comment them out without problems as well.
Presumably you guys have a good idea of what should be done. The following are the lines and data with no values from navbar.ini.
Data\Interface\Baseside\navbar.ini
(2): behavior
(3): mesh
(55): hardpoint
(61): event
(68): hardpoint
(74): event
(81): hardpoint
(87): event
(94): hardpoint
(100): event
(107): hardpoint
(113): event
(120): hardpoint
(126): event
(133): hardpoint
(139): event
(146): hardpoint
(152): event
(159): hardpoint
(165): event
(172): hardpoint
(178): event
(185): hardpoint
(191): event
(198): hardpoint
(204): event