User is unable to Invite friends through the Invitation portlet

• Type: Regression Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: 7.0.0 M3
• Fix Version/s: 7.0.0 Alpha 2
• Component/s: Invite Members widget, Portal Services, Portal Services > Component Management, Portal Services > Component Management > Module Framework (OSGi)
• Labels: None
• Fix Priority: 5

Steps to reproduce:
1. Add Invitation portlet to page
2. Click 'Invite Friends'
3. Enter in an email address
4. Click 'Invite Friends'

Expected result:
User is able to invite friends.

Actual result:
User is unable to invite friends. Portlet becomes temporarily unavailable and console exceptions. (see below)

19:18:12,534 ERROR [http-bio-8080-exec-8][render_portlet_jsp:132] null
java.lang.NullPointerException
        at sun.misc.MetaIndex.mayContain(MetaIndex.java:243)
        at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:830)
        at sun.misc.URLClassPath.getResource(URLClassPath.java:199)
        at sun.misc.URLClassPath.getResource(URLClassPath.java:251)
        at java.lang.ClassLoader.getBootstrapResource(ClassLoader.java:1305)
        at java.lang.ClassLoader.getResource(ClassLoader.java:1144)
        at java.lang.ClassLoader.getResource(ClassLoader.java:1142)
        at java.lang.ClassLoader.getResource(ClassLoader.java:1142)
        at java.net.URLClassLoader.getResourceAsStream(URLClassLoader.java:227)
        at org.apache.catalina.loader.WebappClassLoader.getResourceAsStream(WebappClassLoader.java:1530)
        at com.liferay.portal.kernel.util.StringUtil.read(StringUtil.java:2122)
        at com.liferay.util.ContentUtil._get(ContentUtil.java:59)
        at com.liferay.util.ContentUtil._get(ContentUtil.java:72)
        at com.liferay.util.ContentUtil.get(ContentUtil.java:43)
        at com.liferay.portal.util.LocalizationImpl.getLocalizationMap(LocalizationImpl.java:397)
        at com.liferay.portal.kernel.util.LocalizationUtil.getLocalizationMap(LocalizationUtil.java:146)
        at com.liferay.invitation.web.util.InvitationUtil.getEmailMessageSubjectMap(InvitationUtil.java:87)
        at com.liferay.invitation.web.portlet.action.ViewActionCommand.doProcessCommand(ViewActionCommand.java:115)
        at com.liferay.portal.kernel.portlet.bridges.mvc.BaseActionCommand.processCommand(BaseActionCommand.java:34)
        at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.callActionMethod(MVCPortlet.java:260)