Hi,
I recently updated to GWT 2.6.0. Since then I'm getting a
UnsupportedClassVersionError in (regular) DevMode at runtime. A regular
compile works fine. Explicitly setting the sourceLevel in der DevMode
launcher arguments (-sourceLevel 6 or -sourceLevel 1.6) doesn't help.
Changing the DevMode JRE to 7 works around the problem.
I'm using Firefox ESR 24.3.0.
Here's the full error:
14:17:50.548 [ERROR] [ajaxadmin] Unable to load module entry point class
com.google.gwt.useragent.client.UserAgentAsserter (see associated exception
for details)
java.lang.RuntimeException: Deferred binding failed for
'com.google.gwt.useragent.client.UserAgent' (did you forget to inherit a
required module?)
at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:53)
at com.google.gwt.core.shared.GWT.create(GWT.java:72)
at com.google.gwt.core.client.GWT.create(GWT.java:86)
at
com.google.gwt.useragent.client.UserAgentAsserter.onModuleLoad(UserAgentAsserter.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:411)
at
com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:200)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:695)
Caused by: java.lang.UnsupportedClassVersionError:
com/google/gwt/useragent/client/UserAgentImplGecko1_8 : Unsupported
major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.lang.ClassLoader.defineClass(ClassLoader.java:471)
at
com.google.gwt.dev.shell.CompilingClassLoader.findClass(CompilingClassLoader.java:1121)
at
com.google.gwt.dev.shell.CompilingClassLoader.loadClass(CompilingClassLoader.java:1194)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:249)
at
com.google.gwt.dev.shell.ModuleSpace.loadClassFromSourceName(ModuleSpace.java:670)
at
com.google.gwt.dev.shell.ModuleSpace.rebindAndCreate(ModuleSpace.java:473)
at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:49)
at com.google.gwt.core.shared.GWT.create(GWT.java:72)
at com.google.gwt.core.client.GWT.create(GWT.java:86)
at
com.google.gwt.useragent.client.UserAgentAsserter.onModuleLoad(UserAgentAsserter.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:411)
at
com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:200)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:695)
Is there anything I can do about that?
Thanks for your help,
Timo
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