This error normally points to conflict with menus or customized workspaces. Do you have any customization?
Please review https://communities.bentley.com/products/microstation/w/microstation__wiki/10583/error---unable-to-load-create-dialog-item-of-type-iconcmd-id
If you do not have any custom menu, custom workspaces and it is a fresh MicroStation installation please try the following:
Reset your UPF https://communities.bentley.com/products/microstation/w/microstation__wiki/8978/how-to-reset-user-preferences-and-delete-microstation-s-temporary-files
or Restore MicroStation to Factory defaults https://communities.bentley.com/products/microstation/w/microstation__wiki/8671/restore-microstation-to-factory-defaults
Answer Verified By: Duc Nguyen
i tried to reset Microsation to factory defaults. but it's still error T_T