Eclipse cannot start, Java was started but returned exit code=1

The eclipse problem puzzled me for a long time, and sometimes it can be solved by a reboot. But this is very inconvenient if I have many files working at hand. The ini file I use is like below:

-startup
plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502
-product
com.springsource.sts.ide
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-vm
C:\Program Files (x86)\Java\jdk1.6.0_38\bin\javaw.exe
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xmn128m
-Xms40m
-Xmx512m
-Xss1m
-XX:PermSize=128m
-XX:MaxPermSize=256m

I tried many ways to solve this problem, but none of them worked.

And I tried to re-install the latest JDK and JRE, and use the raw ini file, which is like below:
-startup
plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502
-product
com.springsource.sts.ide
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
384M
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xmn128m
-Xms256m
-Xmx768m
-Xss1m
-XX:PermSize=128m
-XX:MaxPermSize=384m

It works.

I don't know whether his can solve your problem, but it's worth to have a try.

[Update~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~]

I found the problem happened again, so it looks that reinstall JDK/JRE doesn't solve the problem. I found out that it's because I am using 1up Bins which is a taskbar icon plugin, and this has some conflicts. I killed Bins.exe from task manager, then Eclipse was able to run again. And the problem never happens anymore.

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