Index: ssts-invoice/src/main/java/com/forgon/disinfectsystem/invoicemanager/service/InvoiceManagerImpl.java
===================================================================
diff -u -r29357 -r29442
--- ssts-invoice/src/main/java/com/forgon/disinfectsystem/invoicemanager/service/InvoiceManagerImpl.java	(.../InvoiceManagerImpl.java)	(revision 29357)
+++ ssts-invoice/src/main/java/com/forgon/disinfectsystem/invoicemanager/service/InvoiceManagerImpl.java	(.../InvoiceManagerImpl.java)	(revision 29442)
@@ -9356,8 +9356,8 @@
 				
 				if (tempVo != null) {
 					tempVo.setAmount(tempVo.getAmount() + 1);
-					tempVo.setTotalPrice(tempVo.getTotalPrice()
-							+ tousseInstance.getPrice());
+					tempVo.setTotalPrice((tempVo.getTotalPrice() == null ? 0 : tempVo.getTotalPrice())
+							+ (tousseInstance.getPrice() == null ? 0 : tousseInstance.getPrice()));
 				} else {
 					
 					String expireDateStr = tousseInstance.getValidUntilStr(Constants.SIMPLEDATEFORMAT_YYYYMMDD);
@@ -9374,7 +9374,7 @@
 					tempVo.setBatchNumber(sterilizationdate);
 					tempVo.setExpireDate(expireDateStr);
 					tempVo.setSterilizerName(sterilizerName);
-					tempVo.setTotalPrice(tousseInstance.getPrice());
+					tempVo.setTotalPrice(tousseInstance.getPrice() == null ? 0 : tousseInstance.getPrice());
 					tempVo.setSupplierName(tousseDefinition.getSupplierName());
 					voList.add(tempVo);
 				}