--- trunk/src/brains/SimCreator.cpp	2014/04/15 20:36:19	1983
+++ trunk/src/brains/SimCreator.cpp	2014/12/11 16:16:43	2047
@@ -228,7 +228,7 @@ namespace OpenMD {
     catch (OpenMDException& e) {
       sprintf(painCave.errMsg, 
               "%s\n",
-              e.getMessage().c_str());
+              e.what());
       painCave.isFatal = 1;
       simError();
     }
@@ -785,10 +785,18 @@ namespace OpenMD {
       }
     }
 
-    if (simParams->getOutputElectricField() | simParams->haveElectricField()) {
+    if (simParams->getOutputElectricField() |
+        simParams->haveElectricField() | simParams->haveUniformField() |
+        simParams->haveUniformGradientStrength() |
+        simParams->haveUniformGradientDirection1() |
+        simParams->haveUniformGradientDirection2() ) {
       storageLayout |= DataStorage::dslElectricField;
     }
 
+    if (simParams->getOutputSitePotential() ) {
+      storageLayout |= DataStorage::dslSitePotential;
+    }
+
     if (simParams->getOutputFluctuatingCharges()) {
       storageLayout |= DataStorage::dslFlucQPosition;
       storageLayout |= DataStorage::dslFlucQVelocity;