[OSX] Launch Clamp kind of stays attached?

[justidutch]

This is my first bug report I've filed, so I hope I do it properly. I'll describe the issue first:

I built a (very large) ship in VAB last night, it took a long time because it's complex. I did a number of test launched throughout the build process to test out various aspects of it as I went. Quite frequently the ship exploded for various reasons, but that's okay, it was testing. But a couple of times I am sure, as a part exploded, I very briefly saw a launch clamp attached to the ship, and I think perhaps to the part that exploded.

This morning I completed the ship's construction and tried launching it for real, fully crewed, etc. Nearing the time when the first stage would separate (several thousand meters up), the ship exploded and I definitely, though very briefly, saw a launch clamp still attached to the ship (I believe to the part that exploded, I think it was a LFB KR-1x2 engine). So, I thought to post this in hopes that this could be researched and squashed. I created a zip folder with a screen shot, the .craft file and the .log file, which you can download from my personal website here. I didn't take a close look through the log file myself, it might include my entire morning's work and not just the launch itself.

Also, after the ship exploded, I tried reverting to the launch, then the KSP program hung up/crashed. Just so you know, the ship has about 500 parts.

KSP version:

build id = 00842

2015-05-01_14-10-53

Branch: master

What Happens:

Craft explodes, can briefly see a launch clamp still attached to ship several thousand meters up.

Mods / Add-Ons:

All Stock

Steps to Replicate:

1) load .craft file contained in zip file (link is above)

2) launch the ship

Result:

For me, the ship explodes several thousand meters up, just a little bit before the first staging action should occur.

My Machine:

Model Name: MacBook Air

Model Identifier: MacBookAir6,2

Processor Name: Intel Core i7

Processor Speed: 1.7 GHz

Number of Processors: 1

Total Number of Cores: 2

L2 Cache (per Core): 256 KB

L3 Cache: 4 MB

Memory: 8 GB

Boot ROM Version: MBA61.0099.B12

SMC Version (system): 2.13f9

Software: OS X 10.8.5 (12F2518)

Graphics: Intel HD Graphics 5000 1024 MB

Edited May 9, 2015 by justidutch

[sal_vager]

There seems to be a bug when you use a lot of launch clamps, I've seen this on Linux and others have reported it on Windows, try to use as few launch clamps as possible.