diff --git a/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R b/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R
index fb70d9c..1938ceb 100644
--- a/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R
+++ b/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R
@@ -62,7 +62,7 @@
                                   "<directory-to-save-graphs>",
                                   sep=" " ) )
 
-    q()  # basically exit(), but in R
+    quit( status = 1 )  # basically exit(), but in R
 }
 
 # -------------------------------
@@ -135,9 +135,20 @@
 
 print( "Combining Passed, Failed, and Planned Data." )
 
-categories <- c( fileData[ 'num_failed' ],
-                 fileData[ 'num_passed' ],
-                 fileData[ 'num_planned' ] )
+requiredColumns <- c( "num_failed", "num_passed", "num_planned" )
+
+tryCatch( categories <- c( fileData[ requiredColumns] ),
+          error = function( e ) {
+              print( "[ERROR] One or more expected columns are missing from the data. Please check that the data and SQL command are valid, then try again." )
+              print( "Required columns: " )
+              print( requiredColumns )
+              print( "Actual columns: " )
+              print( names( fileData ) )
+              print( "Error dump:" )
+              print( e )
+              quit( status = 1 )
+          }
+         )
 
 # --------------------
 # Construct Data Frame
@@ -294,9 +305,16 @@
 
 print( paste( "Saving result graph to", outputFile ) )
 
-ggsave( outputFile,
-        width = imageWidth,
-        height = imageHeight,
-        dpi = imageDPI )
+tryCatch( ggsave( outputFile,
+                  width = imageWidth,
+                  height = imageHeight,
+                  dpi = imageDPI ),
+          error = function( e ){
+              print( "[ERROR] There was a problem saving the graph due to a graph formatting exception.  Error dump:" )
+              print( e )
+              quit( status = 1 )
+          }
+        )
 
 print( paste( "[SUCCESS] Successfully wrote result graph out to", outputFile ) )
+quit( status = 0 )