Manolo is correct, the  superdevmode-launcher-legacy.jar is not needed with 
GWT 2.7. It can be used with GWT 2.5.x and 2.6.x.

Did you add that to the classpath? 

Brandon


On Tuesday, October 21, 2014 6:03:14 AM UTC-7, Manuel Carrasco Moñino wrote:
>
> You shouldn't put never that .jar in your classpath.
> GPE takes care of adding it to the launcher classpath when you run 
> superdevmode and your gwt is not 2.7. 
>
> On Tue, Oct 21, 2014 at 2:31 PM, Matic Petek <[email protected] 
> <javascript:>> wrote:
>
>> I have superdevmode-launcher-legacy.jar in classpath and it is not 
>> compatible with GWT 2.7. 
>> Regards,
>>   Matic
>>
>>
>> On Friday, September 5, 2014 5:40:55 PM UTC+2, Brandon Donnelson wrote:
>>>
>>> I suspect the sdk isn't what you think it is if its not working. Can you 
>>> check the classpath and see if it was updated? 
>>>
>>> On Monday, September 1, 2014 6:09:18 AM UTC-7, Matic Petek wrote:
>>>>
>>>> Hi,
>>>>  I would like to test new compile per file option, but we run our 
>>>> project from Eclipse and we don't use Maven. So I have perform the 
>>>> following steps :
>>>> 1) Download JAR files from https://oss.sonatype.org/
>>>> content/repositories/google-snapshots/com/google/gwt/
>>>> gwt-servlet.jar
>>>> gwt-user.jar
>>>> gwt-dev.jar
>>>> gwt-codeserver.jar
>>>>
>>>> on 1.9.2014 date
>>>>
>>>> 2) Create new "Google" -> "Web Toolkit" configuration
>>>>
>>>> 3) select this configuration on my Eclipse project.
>>>>
>>>> But when I run hosted mode, I get the error below. Any idea if I'm 
>>>> doing something wrong or Plugin (Kepler SR2, Google Plugin for Eclipse 
>>>> 4.3 3.7.0.v201407290035-rel-r43) is not update-ed with the latest 
>>>> version of GWT. Thank you.
>>>> Regards,
>>>>    Matic
>>>>
>>>> Exception in thread "main" java.lang.NoSuchMethodError: 
>>>> com.google.gwt.dev.javac.CompilationStateBuilder.init(
>>>> Lcom/google/gwt/core/ext/TreeLogger;Ljava/io/File;)V
>>>>
>>>> at com.google.gwt.dev.DevModeBase.doStartup(DevModeBase.java:943)
>>>>
>>>> at com.google.gwt.dev.DevMode.doStartup(DevMode.java:498)
>>>>
>>>> at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1097)
>>>>
>>>> at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:863)
>>>>
>>>> at com.google.gwt.dev.DevMode.main(DevMode.java:379)
>>>>
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