WPF 615 Beta2 failed to deploy a widget to Mashup Center   

I am using WPF 615 beta2 with Mashup Center V2 pre-GA driver.
After creating a widget in WPF, I wanted to deploy it to Mashup Center.
I used Widgets > publish Widgets to Lotus Mashups toolbox > giving login ID and Password.
Then, I got a deployment failure message: Unable to publish widgets. Reason: class com.bowstreet.util.WrappedException: Cannot log in to mashup server localhost:9080 as user imcadmin.
Details>>

class com.bowstreet.util.WrappedException: Cannot log in to mashup server localhost:9080 as user imcadmin.
Cannot log in to mashup server localhost:9080 as user imcadmin.
Plug-in Provider: IBM
Plug-in Name: WebSphere Portlet Factory Designer UI
Plug-in ID: com.bowstreet.designer.ui
Version: 7.0.0

java.io.FileNotFoundException: http://localhost:9080/mashups/bootstrap?j_username=imcadmin&j_password=passw0rd
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1194)
at com.bowstreet.util.HTTPRequest.invoke(HTTPRequest.java:609)
at com.bowstreet.widget.CatalogModel.login(CatalogModel.java:214)
at com.bowstreet.widget.CatalogModel.login(CatalogModel.java:185)
at com.bowstreet.widget.WidgetPublisher.loginToMashupServer(WidgetPublisher.java:212)
at com.bowstreet.widget.WidgetPublisher.publishWidgets(WidgetPublisher.java:142)
at com.bowstreet.designer.webapp.actions.PublishWidgets$1.run(PublishWidgets.java:157)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1782)
at com.bowstreet.designer.webapp.actions.PublishWidgets$2.run(PublishWidgets.java:177)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)

Wanted to provide some additional details here on the procedure required to generate a production war for WPF 6.1.5 beta. We have reorganized the menu to be more consistent with how Eclipse functions. To generate a production war right mouse click the project and select Export -> WebSphere Portlet Factory Portlet WAR. See attached screen shot for details.