diff --git a/MetFragLib/src/main/java/de/ipbhalle/metfraglib/database/LocalSDFDatabase.java b/MetFragLib/src/main/java/de/ipbhalle/metfraglib/database/LocalSDFDatabase.java
index 9075134..f5dff39 100644
--- a/MetFragLib/src/main/java/de/ipbhalle/metfraglib/database/LocalSDFDatabase.java
+++ b/MetFragLib/src/main/java/de/ipbhalle/metfraglib/database/LocalSDFDatabase.java
@@ -121,7 +121,9 @@ protected void readCandidatesFromFile() throws Exception {
 				while(keys.hasNext()) {
 					String curKey = keys.next();
 					if(!this.candidates.get(i).hasDefinedProperty(curKey)) this.candidates.get(i).setProperty(curKey, "-");
-					if(((String)this.candidates.get(i).getProperty(curKey)).equals("")) this.candidates.get(i).setProperty(curKey, "-");
+                    Object property = this.candidates.get(i).getProperty(curKey);
+                    if (property instanceof String && ((String) property).isEmpty())
+                        this.candidates.get(i).setProperty(curKey, "-");
 				}
 			}
 			
diff --git a/MetFragWeb/src/main/webapp/includes/candidateFiltersPrime.xhtml b/MetFragWeb/src/main/webapp/includes/candidateFiltersPrime.xhtml
index 90b9ab9..8662386 100644
--- a/MetFragWeb/src/main/webapp/includes/candidateFiltersPrime.xhtml
+++ b/MetFragWeb/src/main/webapp/includes/candidateFiltersPrime.xhtml
@@ -388,7 +388,7 @@
 					cellspacing="4" cellpadding="4" styleClass="subPanel"
 					rendered="#{metFragWebBean.suspectListInclusionFilterEnabled}">
 					<p:fileUpload id="suspectListsFilter"
-						fileUploadListener="#{metFragWebBean.suspectListFilterUploadListener}"
+						listener="#{metFragWebBean.suspectListFilterUploadListener}"
 						auto="true" mode="advanced" maxFileCount="10"
 						maxFileSize="20000000" autoUpload="true" multiple="false"
 						required="false" update="suspectListInclusionFilterPanel">
diff --git a/MetFragWeb/src/main/webapp/includes/candidateScoresPrime.xhtml b/MetFragWeb/src/main/webapp/includes/candidateScoresPrime.xhtml
index 8d546db..d4ac062 100644
--- a/MetFragWeb/src/main/webapp/includes/candidateScoresPrime.xhtml
+++ b/MetFragWeb/src/main/webapp/includes/candidateScoresPrime.xhtml
@@ -146,7 +146,7 @@
 						<h:panelGrid columns="1">
 							<p:fileUpload update="retentionTimeScorePanel"
 								id="retentionTimeTrainingFile"
-								fileUploadListener="#{metFragWebBean.retentionTimeFileUploadListener}"
+								listener="#{metFragWebBean.retentionTimeFileUploadListener}"
 								auto="true" mode="advanced" maxFileCount="10"
 								maxFileSize="20000000" autoUpload="true" multiple="false">
 							</p:fileUpload>
@@ -245,7 +245,7 @@
 					cellspacing="4" cellpadding="4" styleClass="subPanel"
 					rendered="#{metFragWebBean.suspectListInclusionScoreEnabled}">
 					<p:fileUpload id="suspectListsScore"
-						fileUploadListener="#{metFragWebBean.suspectListScoreUploadListener}"
+						listener="#{metFragWebBean.suspectListScoreUploadListener}"
 						auto="true" mode="advanced" maxFileCount="10"
 						maxFileSize="20000000" autoUpload="true" multiple="false"
 						required="false" update="suspectListInclusionScorePanel">
diff --git a/MetFragWeb/src/main/webapp/includes/databasePrime.xhtml b/MetFragWeb/src/main/webapp/includes/databasePrime.xhtml
index 32a5807..d391204 100644
--- a/MetFragWeb/src/main/webapp/includes/databasePrime.xhtml
+++ b/MetFragWeb/src/main/webapp/includes/databasePrime.xhtml
@@ -57,7 +57,7 @@
                         <h:panelGrid columns="1"
                                      rendered="#{metFragWebBean.localDatabaseDefined}">
                             <p:fileUpload update="mainForm:mainAccordion" id="candidateFileUpload"
-                                          fileUploadListener="#{metFragWebBean.candidateFileUploadListener}"
+                                          listener="#{metFragWebBean.candidateFileUploadListener}"
                                           auto="true" mode="advanced">
                             </p:fileUpload>
                             <h:panelGroup id="candidateFileName" layout="block"
diff --git a/MetFragWeb/src/main/webapp/includes/uploadParameters.xhtml b/MetFragWeb/src/main/webapp/includes/uploadParameters.xhtml
index 20280e2..90b6371 100644
--- a/MetFragWeb/src/main/webapp/includes/uploadParameters.xhtml
+++ b/MetFragWeb/src/main/webapp/includes/uploadParameters.xhtml
@@ -20,7 +20,7 @@
 					value="Upload parameters as ZIP file" />
 				<br />
 				<p:fileUpload update="uploadParametersPanel" id="parametersUpload"
-					fileUploadListener="#{metFragWebBean.parametersUploadListener}"
+					listener="#{metFragWebBean.parametersUploadListener}"
 					auto="true" mode="advanced">
 				</p:fileUpload>
 				<h:panelGroup id="uploadParametersError" style="padding-top: 10px"