Thanks for the suggestions. The problem appeared when posting this batch, not and others before now. The main difference was these were the first batches with such a large number of items. I tested this last night, and it hung for me as well. I waited 10 minutes for the two invoices to post, and windows came back said the program was not responding. I also tried posting from two other workstations with exactly the same response. The only thing I did not try was to copy the data to the workstation hard drive. I will do that tonight as I am one the road today. I will do as you suggest Andrew and turn on the option you suggest, although I am not familiar with it. I am sure it will be easy to find. Thanks again. I will update you tommorrow.