Issue compiling widgetset

Hi all,

Having an issue using mvn vaadin:update-widgetset install. I need to compile the widgetset in order to use the google maps addon. I'm not sure what is wrong with my configuration but mvn is finding a string 'ie9' in some .gwt.xml that does not exist in my project. What needs to change to correct this issue?

The mvn vaadin:update-widgetset install command fails with the following error:
[INFO] auto discovered modules [com.companyname.productname.widgetset.ProductWidgetSet]
[INFO] Loading inherited module 'com.companyname.productname.widgetset.ProductWidgetSet'
[INFO]    Loading inherited module 'com.vaadin.DefaultWidgetSet'
[INFO]       Loading inherited module 'com.vaadin.Vaadin'
[INFO]          [ERROR] Line 46: Value 'ie9' in not a valid value for property 'user.agent'
[INFO]          [ERROR] Line 46: Value 'ie10' in not a valid value for property 'user.agent'

Here is my ProductWidgetSet.gwt.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 1.7.0//EN" "http://google-web-toolkit.googlecode.com/svn/tags/1.7.0/distro-source/core/src/gwt-module.dtd">
<module>
<inherits name="com.vaadin.DefaultWidgetSet" />
<inherits name="com.vaadin.tapio.googlemaps.Widgetset" />
</module>

My pom.xml is attached. I am using IntelliJ IDEA 2016.2.4, Vaadin Support 1.2.0, & Vaadin Designer 1.1.0.beta on OS X 10.11.6.