X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FAlignViewport.java;h=a2d5ec27055d1ce3a5f6747c79e961f02fabebe8;hb=a4833a9c3e15e416598b61e6887ee5743c3c2734;hp=afdfd69435a1e9de3a05f9582853afec0bb3d365;hpb=d4ae2dfc35cc057375240084a2c0ccfe3f820d47;p=jalview.git

diff --git a/src/jalview/gui/AlignViewport.java b/src/jalview/gui/AlignViewport.java
index afdfd69..a2d5ec2 100755
--- a/src/jalview/gui/AlignViewport.java
+++ b/src/jalview/gui/AlignViewport.java
@@ -513,7 +513,7 @@ public class AlignViewport
 
         try
         {
-          int aWidth = alignment.getWidth();
+          int aWidth = (alignment!=null) ? alignment.getWidth() : 0; // null pointer possibility here.
           if(aWidth<0)
         {
             return;