JAL-1528 NullPointer check / more informative PDB fetch status bar
[jalview.git] / src / jalview / ext / rbvi / chimera / JalviewChimeraBinding.java
index fb03f04..0042041 100644 (file)
@@ -782,7 +782,7 @@ public abstract class JalviewChimeraBinding extends
 
   private void waitForChimera()
   {
-    while (viewer.isBusy())
+    while (viewer != null && viewer.isBusy())
     {
       try {
         Thread.sleep(15);