Index: lams_tool_scratchie/src/java/org/lamsfoundation/lams/tool/scratchie/web/controller/LearningController.java
===================================================================
diff -u -r2e61eefa786c0411376091c504812a8931395186 -rcb6c263502cb557374502608fd07cc8c317d22c7
--- lams_tool_scratchie/src/java/org/lamsfoundation/lams/tool/scratchie/web/controller/LearningController.java	(.../LearningController.java)	(revision 2e61eefa786c0411376091c504812a8931395186)
+++ lams_tool_scratchie/src/java/org/lamsfoundation/lams/tool/scratchie/web/controller/LearningController.java	(.../LearningController.java)	(revision cb6c263502cb557374502608fd07cc8c317d22c7)
@@ -306,7 +306,7 @@
 	    boolean questionEtherpadEnabled = scratchie.isQuestionEtherpadEnabled()
 		    && StringUtils.isNotBlank(Configuration.get(ConfigurationKeys.ETHERPAD_API_KEY));
 	    request.setAttribute(ScratchieConstants.ATTR_IS_QUESTION_ETHERPAD_ENABLED, questionEtherpadEnabled);
-	    if (questionEtherpadEnabled) {
+	    if (questionEtherpadEnabled && scratchieService.isGroupedActivity(scratchie.getContentId())) {
 		// get all users from the group, even if they did not reach the Scratchie yet
 		// order them by first and last name
 		Collection<User> allGroupUsers = scratchieService.getAllGroupUsers(toolSessionID).stream()
Index: lams_tool_scratchie/web/pages/learning/scratchies.jsp
===================================================================
diff -u -rcf882eeb6e3cd1c720e284092ec4d25f7efdee9c -rcb6c263502cb557374502608fd07cc8c317d22c7
--- lams_tool_scratchie/web/pages/learning/scratchies.jsp	(.../scratchies.jsp)	(revision cf882eeb6e3cd1c720e284092ec4d25f7efdee9c)
+++ lams_tool_scratchie/web/pages/learning/scratchies.jsp	(.../scratchies.jsp)	(revision cb6c263502cb557374502608fd07cc8c317d22c7)
@@ -1,9 +1,9 @@
 <%@ include file="/common/taglibs.jsp"%>
 
-<c:if test="${isQuestionEtherpadEnabled}">
+<c:if test="${isQuestionEtherpadEnabled and not empty allGroupUsers}">
 	<%-- Prepare same content for each question Etherpad. Each group participant's first and last name --%>
 	<c:set var="questionEtherpadContent">
-		<c:forEach items="${allGroupUsers}" var="user"><c:out value="${user.firstName}" /> <c:out value="${user.lastName}" />:<br />
+		<c:forEach items="${allGroupUsers}" var="user"><c:out value="${user.firstName}" />&nbsp;<c:out value="${user.lastName}" />:<br />
 	<br />
 	<br /></c:forEach>
 	</c:set>