Random exploding light

[Foxdemon]

I recently switched to 1.03 and when i switch to a station orbiting minmus 1 of the the 4 radial lights explode O.o. The is no open servicebay, no solarpanel clipping or a atmosphere infering. Can someone tell me what it is?

http://imgur.com/4R9bBfw (the small girder you see is where the light was attached and it seems 1 of the girders also exploded)

I know its not a very big issue, but i hope to prevent it from happening to other parts

[Snark]

One possibility: maybe a bug that affects certain craft that were already launched pre-1.0.3?

By any chance does your station have a heat-shield attached to any of its components? One bug in 1.0.3 is that funky weird stuff happens if you switch to a vessel that A) has a heat shield, and was already launched before 1.0.3 was installed. Fixing that bug was the main reason for 1.0.4.

If you have no heat shields involved, then I have no idea.

One interesting test: If you just go back to the VAB and launch a new copy of that same station, do the lights explode when it's sitting on the pad, or not?

If not, this may just be some issue about 1.0.3 not playing nice with a ship that was already in flight at the time the patch was added. I got bitten by the heat-shield bug (had one craft on its way back from Minmus, went kablooie when I switched to it), and solved it as follows:

1. Revert to a save I made shortly before my craft went kaboom. The game is fine, as long as I don't actually switch to that craft.

2. "Launch" (as in "go to the launchpad", didn't actually take off) a new copy of that craft, do a named quicksave, and revert to VAB.

3. Exit KSP. Copy persistent.sfs to persistent_copy.sfs (in case I screw something up).

4. Open persistent_copy.sfs and the temporary quicksave in a text editor (I use Notepad++)

5. Find my stricken craft in persistent_copy.sfs, and the fresh-copy-sitting-on-the-pad in the temporary quicksave.

6. Do some copy-and-paste (copy the craft from temporary quicksave, paste to persistent_copy.sfs). This needs some care and attention for some of the minor fiddly bits of the craft: need to preserve the original craft's ID, crew roster, orbital characteristics, science data, flight history, resource levels. So it involves a few minutes of finicky editing.

7. Start up KSP, load persistent_copy, and go to my craft on its way home from Minmus.

No idea if that will help you with whatever's causing your problem, but it may be worth a try.

[CalculusWarrior]

I've had Cubic Octagonal Struts explode randomly as well, I opened my fairings and poof, there it went. I've seen reports about low-mass parts not handling the heating system very well, so it appears to be a bug. Very little you can do on your end unfortunately, except perhaps file a bug report.

What does the F3 flight report say? If it says that your strut exploded from overheating, then it's most like the same bug.