Hi, I had a beautifully working Eclipse (Galileo) working development environment for PHP (with Aptana and PDT plugin), since before I installed the flash builder 4 plugin. Now, when I try to start Eclipse, the eclipse logo screen appears for less than one second and then, nothing, nada, void (aaargh!)... I'm on Windows 7 by the way. Some clue(s) to save my day(s) ?
Ok, problem solved.
First I uninstalled the flash builder plugin, and eclipse galileo was still not starting.
Then I uninstalled java (both jre/jdk, v6.20).
Crossing my fingers, I reinstalled jdk and then jre (latest downloaded); and eclipse ran again (pheeeew!).
Finally, I installed flash builder 4 plugin again, it works too (!), and aptana works, ... all is working back again, fine!