Unable to find plug-in: org.eclipse.equinox.launcher_1.0.200.v20090520.

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当我在做RCP如何多出到多平台时，碰到一个问题

Please check the error log for more details.

eclipse.buildId=M20090917-0800
java.version=1.6.0_03
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=zh_CN
Framework arguments: -product org.eclipse.epp.package.jee.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.jee.product

这个问题有可能是：eclipse版本和delta的版本不一致的原因。

This is generally caused by having a delta pack that is a different version from the rest of your target.

For example, if you have a 3.4.1 eclipse, but a 3.4 deltapack.

More specifically, in this case you end up with 2 different versions of the org.eclipse.equinox.launcher bundle (and maybe also the fragments). Only one of those will be resolved for use in the build, generally the one with the higher version. The org.eclipse.equinox.executable feature includes a specific version of the launchers, if it is asking for the lower version, then it probably won't find it since it was the higher version that got resolved.