Ok, it isnt compatible with 3.0 (Tships has changed) but for anyone who wants this mod, you can either update the 3.0 tships or delete all but the scene files from this cat/dat, leaving the external docking but not increasing the overall docking to compensate.
For those who are interested, ive customised this mod for myself - ive deleted everything except the scene files for the TL's, and ive edited the MMBS scene file to have 4 external docking slots instead of 2.
What this effectively does is allow every TL except the MMBS to dock 2 TS/TP ships, with the MMBS docking 4, but because i have not edited the Tships, doing so uses up a regular docking slot - ie, you can either dock 5 fighters to the MMBS or 4 TS/TP and 1 fighter.
Some people dont like that, and they edit Tships to increase the overall docking capacity, but I did it to avert the Tships edit and maintain compatibility, and im fine with it (small price to pay).
Because ive ONLY included the scene files for the TL's (only about 5 or six bod files total) this version is now very compatible - it will work with 3.0 and most likely future updates, since it only edits a minimum of files.
I should warn that external docking seems to have quirks - if you undock a docked ship manually (change to the ship) you wont be able to move until you spin the ship around, and when youve done so you wont be able to slow down - this is because of interference of the autopilot.
There is an easy solution - each time you undock, select the TL you undocked from as your target (youll be right under it) and activate then deactivate the autopilot (look for a button in the game's controls that activates/deactivates autopilot if youre unsure) - this will clear up the autopilot and let you fly unhindered
Link 1 http://www.filefactory.com/file/b3g3357 ... od181E.zip
Link 2 http://www.mediafire.com/?hht5jmtdqa3dpuj
EDIT - the archive also has a bod file - ignore it, thats just what i changed. Simply copy the cat and dat files to the X3TC/mods folder and activate as a mod through the launcher, or use the fake patch method.
If anyone is having trouble getting this going, just ask or PM. However, i take no credit for this as its simply a simple custom version of the hangarmod, not my own invention