Sage 300: Can’t Create Control


Cannot open the Customers and Vendors icons in Sage 300
Error Message: “Can’t Create Control”
Error: “Could not open the UI. The system may be busy because another application (such as a data conversion application) has locked the company’s database. Otherwise, the UI was not opened because an unexpected error has occurred”

Cause #1

Windows font size has been set too high.

Resolution #1

  1. Go to Control Panel, Display
  2. Do not use a font size larger than Medium – 125%
  3. Click the Apply button

Cause #2

Screen resolution is low, and the window you want to open is larger than the screen.

Error was observed with a screen resolution of 800 x 600 dpi.

Resolution #2

Increase the screen resolution to 1024 by 768 or greater to resolve the error.


If necessary, seek the assistance of Acute Data Systems to help provide assistance with this process.