At last, I managed to work around the bug.
I disable my antivirus agents temporarily (Avast free antivirus v17.5.2302)
I start the launcher and play the game
Minecraft launches !!!
During minecraft is running, I can then enable Avast again.
If I start the launcher before disabling the antivirus, the game still crashes.
It seems there is a conflic between Avast / Minecraft / Java at startup.
I do not have D3Dgear installed
I have already updated my graphic card drivers
I have already tried reinstalling Java and use different java version (7 & 8)
None of this worked for me...
Moreover, I tried the old minecraft launcher (https://s3.amazonaws.com/Minecraft.Download/launcher/Minecraft.exe), and it crashes exactly the same way (log in windows event) but with no GUI message.
Could this issue be reopened please ?!
Is there a way to launch the game / run the JVM to have more detailled traces ?
Same here : i was using the BDCraft texture pack in 128x128 in 1.4.7 and it was running very smoothly, without any framerate problem.
Now in 1.5.1, I updated the texture pack to have the one compatible with 1.5, and I hardly get more than 15 FPS which is truly unplayable.
I tried different versions of the pack (16x, 32X & 128x), the higher the slower, whereas in 1.4.7 there was no such differences in FPS.
It seems avast is part of the cause...
I have the same problem and solved it disabling the antivirus agents before starting the launcher (see MC-119351)... but its on windows, hope this could help on MacOS!