Seems you can set classloading priority in eclipse so I reordered things 
and now it is fine.  Sorry for the trouble (and the typo on "its"!).

On Wednesday, November 2, 2016 at 11:22:47 AM UTC-7, rjcarr wrote:
>
> I have a really old GWT project that I just tried to compile with gwt 2.8. 
>  The compilation was fine (I use ant), but when I opened up eclipse, and 
> pointed it to the new gwt libraries, I am getting compile errors like this:
>
>     org.apache.tools.ant.types.FileSet: Can only iterate over an array or 
> an instance of java.lang.Iterable
>
> Looking at the ant api for the version I have and fileset is definitely 
> iterable.  Then I try removing the and library and I notice it's classes 
> are still available.  It seems gwt-dev.jar is bundling ant, and apparently 
> a really old version where filesets aren't iterable among other old errors.
>
> This is really strange because I never had a problem with gwt 2.7.  Any 
> suggestion on how to fix this other than reverting back to 2.7? 
>

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