Sage 100

We have had this problem since switching to Sage 100. When we try to change an item's valuation in the Item Valuation Change Selection task in Inventory Management, and all users are logged out of Sage, we get the below dialog: When I click More…

Once every 1-2 weeks I rebuild all sort files and am wondering if I should also be rebuilding the key files? Is there any risk/downside to rebuilding the key files? Also, when I am running the utility do I want Integrity Check and Optimize File checked…