The Cashier screen disappears from view when trying to move to the next screen. This issue normally means the screen's executable file is already running on the PC. To remedy the situation, take the following steps.
Step 1. Right click on your computer's toolbar at the bottom of the screen.
Step 2. Click Start Task Manager.
Step 3. Click on the Processes tab.
Step 4. A list of running processes will display, as shown here to the right. Look for any process name that begins with AP (for example APHP.exe).
Step 5. Highlight the line.
Step 6. Right click on the process.
Step 7. Select End Process from the menu.
Step 8. Reenter the process in the Parts module in FLEX DMS.